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Current in a purely inductive circuit lags the voltage by 90 degrees. The apparent power in such a circuit will be zero, because the power factor is zero, however, energy will still be transferred, and VARs (Volt-Amps-Reactive) will be non-zero.
Wiki User
∙ 14y ago
Wiki User
∙ 14y agoIt is phase shifted 90 degrees out of phase with the voltage. This is the result of the inductor "holding" energy, then releasing it. This is then reactive power, not real power, so it cannot be used to do any real work.
Wiki User
∙ 11y agoInductors and capacitors are called reactive elements in electric circuits.these reactive elements also offer resistance in the circuit termed as reactance
for inductor it is wL (-j)
for capacitor i is 1/wC (j)
where L,C and w are inductance , capacitance and frequency of the AC source respectively
when clubbed with resistance the the resultant of the resistance and reactance gives us the impedance of a circuit
if the impeadence(R=0) of the circuit is of inductor only then these are called as purely inductive circuits
if the impedence of the circuit is dominated by inductor ( wL > 1/wC ) even though the circuit has resistance and capacitor then these circuits are called inductive circuits
Wiki User
∙ 13y agothe current lags behind the voltage by 90 deg. phase angle ( if the circuit is pure inductive ,otherwise the angle depends on the value of inductance)
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What happens in series resonance?
The properties of a series alternating-current L-R-C circuit at resonance are:the only opposition to current flow is resistance of the circuitthe current flowing through the circuit is maximumthe voltage across the resistive component of the circuit is equal to the supply voltagethe individual voltages across the inductive and capacitive components of the circuit are equal, but act in the opposite sense to each otherthe voltage appearing across both the inductive and capacitive components of the circuit is zeroif the resistance is low, then the individual voltages appearing across the inductive and capacitive components of the circuit may be significantly higher than the supply voltage
What happens to current in a series circuit?
the current in series will be same..
What is voltage error circuit and current error circuit?
A voltage error circuit is called an error amplifier and happens when there are discrepancies between the voltage output and the reference voltage. A current error circuit happens when there is a disruption of flow in an ammeter.
If voltage is increased in a circuit what happens to current series and parallel respectively?
In this case current flows from a high voltage to a lower voltage in a circuit.
How current transformer get burn when open circuit happens?
Because of fire
What happens in series resonance?
The properties of a series alternating-current L-R-C circuit at resonance are:the only opposition to current flow is resistance of the circuitthe current flowing through the circuit is maximumthe voltage across the resistive component of the circuit is equal to the supply voltagethe individual voltages across the inductive and capacitive components of the circuit are equal, but act in the opposite sense to each otherthe voltage appearing across both the inductive and capacitive components of the circuit is zeroif the resistance is low, then the individual voltages appearing across the inductive and capacitive components of the circuit may be significantly higher than the supply voltage
What happens when an inductive coil is first connected across a dc supply?
Inductors tend to oppose a change in current, so the initial current is low, and rises according to the RC time constant of the circuit to a final value.
In a circuit with resistive and inductive load what happens to the power factor as the resistive load increases?
The PF will increase
What happens to current in a series circuit?
the current in series will be same..
What happens when the circuit is closed?
Current flows
What happens when closing and breaking an inductive circuit?
When you close an inductive circuit, since an inductor resists a change in current, the initial reaction of the load is to look like a high resistance. As current builds, the resistance falls. With a theoretical source and inductor, current would eventually reach infinity, that is after infinite time, but practical sources and inductors will reach a plateau current. When you open an inductive circuit, again, since an inductor resists a change in current, the inductor attempts to maintain that current, but there is no conductivity for that current so, the inductor presents a high voltage spike in the reverse direction it was initially "charged" with. With a theoretical inductor, and theoretical infinite impedance, the voltage spike would be infinite. Again, practical inductors have a maximum voltage spike, but this spike can still be quite high, even thousands of volts, which can damage the circuit, so it is important to maintain a conduction path for the collapsing field, often a diode, or a resistor/capacitor filter.
What happens to the current in the series circuit?
current remains same in series while divide itself in parallel circuit
When resistance is in a circuit what happens to the current?
When you add resistance to a circuit, current goes down. Ohm's Law: current = voltage divided by resistance.
What is voltage error circuit and current error circuit?
A voltage error circuit is called an error amplifier and happens when there are discrepancies between the voltage output and the reference voltage. A current error circuit happens when there is a disruption of flow in an ammeter.
What happens when an electric current is interupted?
When the circuit is interrupted, the current stops flowing.
What happens if the track of the current is broken in a series circuit?
In a series circuit, if the current is broken the flow of all electricity stops.
What happens to an electric current when a circuit is closed?
If the circuit is closed the electric current will be closed as well.
