The device used for production of electric current

12 Thermodynamics • Introduction • 12.1 Zeroth Law of Thermodynamics: Thermal Equilibrium • 12.2 First law of Thermodynamics: Thermal Energy and Work • 12.3 Second Law of Thermodynamics: Entropy • 12.4 Applications of Thermodynamics: Heat Engines, Heat Pumps, and Refrigerators • Key Terms • Section Summary • Key Equations • 22 The Atom • Introduction • 22.1 The Structure of the Atom • 22.2 Nuclear Forces and Radioactivity • 22.3 Half Life and Radiometric Dating • 22.4 Nuclear Fission and Fusion • 22.5 Medical Applications of Radioactivity: Diagnostic Imaging and Radiation • Key Terms • Section Summary • Key Equations • Teacher Support The learning objectives in this section will help your students master the following standards: • (5) The student knows the nature of forces in the physical world. The student is expected to: • (G) investigate and describe the relationship between electric and magnetic fields in applications such as generators, motors, and transformers. In addition, the OSX High School Physics Laboratory Manual addresses content in this section in the lab titled: Magnetism, as well as the following standards: • (5) Science concepts. The student knows the nature of forces in the physical world. The student is expected to: • (G) investigate and describe the relationship between electric and magnetic fields in applications such as generators, motors, and transformers. Section Key Terms emf induction magnetic flux Changing Magnetic Fields In the preceding section...

\( \newcommand\) • • • • • • • spontaneous chemical reaction that produces an electric current through an outside circuit. These cells are important because they are the basis for the batteries that fuel modern society. But they are not the only kind of electrochemical cell. The reverse reaction in each case is non-spontaneous and requires electrical energy to occur. Introduction The general form of the reaction can be written as: \[ \underset\): Electrochemical Cells. A galvanic cell (left) transforms the energy released by a spontaneous redox reaction into electrical energy that can be used to perform work. The oxidative and reductive half-reactions usually occur in separate compartments that are connected by an external electrical circuit; in addition, a second connection that allows ions to flow between the compartments (shown here as a vertical dashed line to represent a porous barrier) is necessary to maintain electrical neutrality. The potential difference between the electrodes (voltage) causes electrons to flow from the reductant to the oxidant through the external circuit, generating an electric current. In an electrolytic cell (right), an external source of electrical energy is used to generate a potential difference between the electrodes that forces electrons to flow, driving a nonspontaneous redox reaction; only a single compartment is employed in most applications. In both kinds of electrochemical cells, the anode is the electrode at which the oxidation half...

Electric current Generally, current means a flow of something from one place to another place. For example, water falling from a hill, river water moving from one place to another place, and ocean water moving from one place to another place are known as water currents. In a river and ocean, the water molecules moving from one place to another place will conducts current. In a similar way, the electric charge carriers moving from one point to another point in a conductor or semiconductor will conducts electric current. Electric current definition The flow of electric charge carriers in a conductor or In conductors or semiconductors, electric current is conducted by the tiny particles. These tiny particles are known as electric charge carriers. The electric charge carriers could be electrons, In conductors, holes are negligible. So electrons conduct electric current. In semiconductors, both electrons and holes are present. So both electrons and holes conduct electric current. Electric current is an important quantity in electronic circuits. When a Electric current symbol The electric current is represented by a symbol ɪ. The symbol ɪ was used by the French physicist “Andre-Marie Ampere”. The unit of electric current (ampere) is named after him. Electrons have a negative charge and protons have a positive charge. Protons are much heavier than electrons. However, the charge of a proton is equal to the charge of an electron. We know that if two opposite charges are placed clos...

• • The state-of-the-art of thermoelectric generators is reviewed comprehensively. • • The materials used in TEGs, Figure of Merit, improvement techniques are introduced. • • Different configurations of experimental set-ups and prototypes are explored. • • The performance of TEGs is investigated with different simulation software packages. Nowadays humans are facing difficult issues, such as increasing power costs, environmental pollution and global warming. In order to reduce their consequences, scientists are concentrating on improving power generators focused on energy harvesting. Thermoelectric generators (TEGs) have demonstrated their capacity to transform thermal energy directly into electric power through the Seebeck effect. Due to the unique advantages they present, thermoelectric systems have emerged during the last decade as a promising alternative among other technologies for green power production. In this regard, thermoelectric device output prediction is important both for determining the future use of this new technology and for specifying the key design parameters of thermoelectric generators and systems. Moreover, TEGs are environmentally safe, work quietly as they do not include mechanical mechanisms or rotating elements and can be manufactured on a broad variety of substrates such as silicon, polymers and ceramics. In addition, TEGs are position-independent, have a long working life and are ideal for bulk and compact applications. Furthermore, Thermoelec...

Hint: First of all current is produced by the process of electromagnetic induction then it can be measured using some device and then it is consumed i.e. Electrical energy is converted into other forms of energy like mechanical energy or heat. Complete step-by-step answer: GENERATORS- These are the devices which convert one form of energy into electrical energy by the process of electromagnetic induction (which says that voltage is induced in a conductor if there is relative motion in between the conductor and magnetic field). Thus if this induced voltage has a closed path then current starts flowing due to potential difference between. Also this current can be measured by ammeter, galvanometer (if current magnitude is very less). And this current is further used for doing useful work by using different loads which are mostly a motor load like fans, mills etc. So motors are used for consumption of current and production of current can be only by generator. Hence the correct option is “A”. Note: There are two types of generators AC current generators and DC current generators. The AC generators are further of two types: Induction generators and Synchronous generators. The synchronous generators are widely used for the production of AC current in the power plant because it provides constant speed and fluctuations in the frequency are low. These all generators are mechanically rotated by using various energies like potential energy of water kept in the dam, heat energy of fue...

Back to: Welcome to class! In today’s class, we will be talking about the production of continuous electric current. Enjoy the class! Production of Continuous Electric Current An electric current or continuous flow of charge can be generated via the following means: • Chemical Energy • Heat Energy • Mechanical Energy • Solar Energy Electricity from chemical energy Electricity is produced from chemical energy through the use of electric cells. A cell is a device for converting chemical energy into electrical energy. A cell consists of two unlike (dissimilar) metals separated by solutions of various acids or salts. The metals are known as the electrodes and the solutions are electrolyte. The positive electrode is known as the anode, the negative electrode is the cathode. Defects of simple cells Simple cells supply current only for a short time. This is because of chemical processes known as: • Polarization: this is due to the formation of hydrogen gas bubbles around the copper plate of the simple cell. Polarization of cells is reduced or prevented by addition of a suitable chemical known as depolarizer, e.g. manganese dioxide, and potassium dichromate. The depolarizer removes the hydrogen by oxidizing it to water. • Local action: This is due to impurities in the zinc plate. These impurities (e.g. Iron and carbon) set up tiny cells around the zinc surface, producing bubbles of hydrogen. Local action can be prevented by the process of amalgamation, that is the rubbing of mercu...

Electric current Generally, current means a flow of something from one place to another place. For example, water falling from a hill, river water moving from one place to another place, and ocean water moving from one place to another place are known as water currents. In a river and ocean, the water molecules moving from one place to another place will conducts current. In a similar way, the electric charge carriers moving from one point to another point in a conductor or semiconductor will conducts electric current. Electric current definition The flow of electric charge carriers in a conductor or In conductors or semiconductors, electric current is conducted by the tiny particles. These tiny particles are known as electric charge carriers. The electric charge carriers could be electrons, In conductors, holes are negligible. So electrons conduct electric current. In semiconductors, both electrons and holes are present. So both electrons and holes conduct electric current. Electric current is an important quantity in electronic circuits. When a Electric current symbol The electric current is represented by a symbol ɪ. The symbol ɪ was used by the French physicist “Andre-Marie Ampere”. The unit of electric current (ampere) is named after him. Electrons have a negative charge and protons have a positive charge. Protons are much heavier than electrons. However, the charge of a proton is equal to the charge of an electron. We know that if two opposite charges are placed clos...

Hint: First of all current is produced by the process of electromagnetic induction then it can be measured using some device and then it is consumed i.e. Electrical energy is converted into other forms of energy like mechanical energy or heat. Complete step-by-step answer: GENERATORS- These are the devices which convert one form of energy into electrical energy by the process of electromagnetic induction (which says that voltage is induced in a conductor if there is relative motion in between the conductor and magnetic field). Thus if this induced voltage has a closed path then current starts flowing due to potential difference between. Also this current can be measured by ammeter, galvanometer (if current magnitude is very less). And this current is further used for doing useful work by using different loads which are mostly a motor load like fans, mills etc. So motors are used for consumption of current and production of current can be only by generator. Hence the correct option is “A”. Note: There are two types of generators AC current generators and DC current generators. The AC generators are further of two types: Induction generators and Synchronous generators. The synchronous generators are widely used for the production of AC current in the power plant because it provides constant speed and fluctuations in the frequency are low. These all generators are mechanically rotated by using various energies like potential energy of water kept in the dam, heat energy of fue...

\( \newcommand\) • • • • • • • spontaneous chemical reaction that produces an electric current through an outside circuit. These cells are important because they are the basis for the batteries that fuel modern society. But they are not the only kind of electrochemical cell. The reverse reaction in each case is non-spontaneous and requires electrical energy to occur. Introduction The general form of the reaction can be written as: \[ \underset\): Electrochemical Cells. A galvanic cell (left) transforms the energy released by a spontaneous redox reaction into electrical energy that can be used to perform work. The oxidative and reductive half-reactions usually occur in separate compartments that are connected by an external electrical circuit; in addition, a second connection that allows ions to flow between the compartments (shown here as a vertical dashed line to represent a porous barrier) is necessary to maintain electrical neutrality. The potential difference between the electrodes (voltage) causes electrons to flow from the reductant to the oxidant through the external circuit, generating an electric current. In an electrolytic cell (right), an external source of electrical energy is used to generate a potential difference between the electrodes that forces electrons to flow, driving a nonspontaneous redox reaction; only a single compartment is employed in most applications. In both kinds of electrochemical cells, the anode is the electrode at which the oxidation half...

12 Thermodynamics • Introduction • 12.1 Zeroth Law of Thermodynamics: Thermal Equilibrium • 12.2 First law of Thermodynamics: Thermal Energy and Work • 12.3 Second Law of Thermodynamics: Entropy • 12.4 Applications of Thermodynamics: Heat Engines, Heat Pumps, and Refrigerators • Key Terms • Section Summary • Key Equations • 22 The Atom • Introduction • 22.1 The Structure of the Atom • 22.2 Nuclear Forces and Radioactivity • 22.3 Half Life and Radiometric Dating • 22.4 Nuclear Fission and Fusion • 22.5 Medical Applications of Radioactivity: Diagnostic Imaging and Radiation • Key Terms • Section Summary • Key Equations • Teacher Support The learning objectives in this section will help your students master the following standards: • (5) The student knows the nature of forces in the physical world. The student is expected to: • (G) investigate and describe the relationship between electric and magnetic fields in applications such as generators, motors, and transformers. In addition, the OSX High School Physics Laboratory Manual addresses content in this section in the lab titled: Magnetism, as well as the following standards: • (5) Science concepts. The student knows the nature of forces in the physical world. The student is expected to: • (G) investigate and describe the relationship between electric and magnetic fields in applications such as generators, motors, and transformers. Section Key Terms emf induction magnetic flux Changing Magnetic Fields In the preceding section...