What is wattless current

Wattless current is a current which is mainly referred to as an AC current which contains only capacitor or inductor having zero power dissipation even though the current is flowing through it. In other words when current is flowing and there is no loss of power and when a pure inductor or pure capacitor is connected to AC circuit this is known as wattles current. This consists of reactive component and that reactive component is the algebraic sum of the inductive and capacitive reactance as both of them impede the flow of AC current. The resistive components do two things first it converts power into heat although then it is wasted and secondly it stores power in a magnetic field and that is how no power is wasted at all and it is also known as wattles current. What are the important points of wattless current? Wattless current consists of several points which make it more useful and helpful to understand as transformers do not operate on direct current but it operates on the alternating voltage at the input as well as output another point is transformers does not generally amplify powers as vacuum tube as it is a device based on mutual induction which converts magnetic energy into electric energy. In general, efficiency ranges from seventy percent to ninety percent as a choke coil is a pure inductor and average power consumed per cycle is zero in a choke coil. These are used when there is no loop in the flow of current from one end to another and this one end can be an i...

Even if there is current flowing through it, a wattless current is an AC that contains merely a capacitor or inductor with zero power dissipation. In other words, wattless current occurs when current flows without power loss, wherein a pure inductor is coupled to an AC circuit. It consists of a reactive component, which is the algebraic sum of the inductive and capacitive reactances. Both reactances obstruct the flow of AC. The resistive components perform two things. First, they convert power into heat, which is then squandered. Second, they store power in a magnetic field, which means no power is wasted. These resistive components are also known as wattless current. What exactly is a watt? In addition to understanding the wattless current meaning, let us focus on the watt. Watt is primarily a power unit defined as a derived unit of one joule per second. It describes the rate of energy transfer. Watt and watt-hours are vastly different, as both terms power and energy are misleading. Power is the rate at which energy is used or generated and its measuring unit is in watts. There are two additional terms, megawatts and gigawatts. Both work in the field of energy and power. They are separate yet related . Both of them make up a significant portion of the wattless current. In an AC circuit, how can you get wattless current? You can achieve wattless current in an AC circuit by using a purely inductive or capacitive circuit. When the circuit’s usual power consumption equals zer...

If you work from large commercial or industrial premises, you are likely to have items of electrical equipment that require wattless energy to operate. Wattless energy is measured separately from your general units, and if you exceed a certain limit, there will be a separate charge. How wattless charges work Electric power consists of two components: active power and reactive power. Active power is recorded on your normal electricity meter, and appears on your bill as general day and night units. Reactive power is also recorded by your normal meter, but will only affect you if you are a large industrial or commercial business user. This is because certain equipment common to industrial or other large businesses - such as motors or fluorescent lights (e.g. in an industrial premises) - need reactive power in order to operate. Y our wattless unit allowance If the number of wattless units you use in a single billing period exceeds a limit of one-third of all your general units (both day and night), then a charge will apply. We use the term power factor to explain this one-third ratio between active and reactive power, or general and wattless units. An overall power factor of 0.95 must be maintained in order to avoid wattless charges. If your consumption of wattless units increases above one-third of your general units per bill, the power factor will drop below 0.95, and the excess wattless units will incur a charge. How to reduce wattless charges You should contact your electr...

We saw in our tutorial about In an AC circuit, the voltage and current waveforms are sinusoidal so their amplitudes are constantly changing over time. Since we know that power is voltage times the current (P = V*I), maximum power will occur when the two voltage and current waveforms are lined up with each other. That is, their peaks and zero crossover points occur at the same time. When this happens the two waveforms are said to be “in-phase”. The three main components in an AC circuit which can affect the relationship between the voltage and current waveforms, and therefore their phase difference, by defining the total impedance of the circuit are the resistor, the capacitor and the inductor. The impedance, (Z) of an AC circuit is equivalent to the resistance calculated in DC circuits, with impedance given in ohms. For AC circuits, impedance is generally defined as the ratio of the voltage and current phasor’s produced by a circuit component. Phasor’s are straight lines drawn in such a way as to represents a voltage or current amplitude by its length and its phase difference with respect to other phasor lines by its angular position relative to the other phasor’s. AC circuits contain both resistance and reactance that are combined together to give a total impedance (Z) that limits current flow around the circuit. But an AC circuits impedance is not equal to the algebraic sum of the resistive and reactive ohmic values as a pure resistance and pure reactance are 90 o out-of...

The current in an AC circuit is said to be Wattless Current when the average power consumed in such circuit corresponds to Zero. Such current is also called as Idle Current. ... The current in an AC circuit is said to be Wattless Current when the average power consumed in such circuit corresponds to Zero. What is the formula of Wattless current? Answers : (1) It is calculated by the following formula: P = I·V·sinθ, where P is the power in watts, I is the current in amperes, V is the voltage in volts, and sinθ is the sine of the angular phase difference between the current and the voltage Question Description What is wattless current? for Class 12 2023 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about What is wattless current? covers all topics & solutions for Class 12 2023 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for What is wattless current?. Here you can find the meaning of What is wattless current? defined & explained in the simplest way possible. Besides giving the explanation of What is wattless current?, a detailed solution for What is wattless current? has been provided alongside types of What is wattless current? theory, EduRev gives you an ample number of questions to practice What is wattless current? tests, examples and also practice Class 12 tests.