Guidelines

What is the voltage across inductor at equal to zero?

What is the voltage across inductor at equal to zero?

As soon as the switch is closes at t=0+, the inductor acts as an open circuit, hence the current in the circuit is zero. Since the current in the circuit is zero, there is no voltage drop across the resistor and the voltage across the inductor is equal to the supply voltage, which is equal to 60V.

Why average current in capacitor is zero?

When the capacitor builds charges fully. the potential difference across the resistor becomes zero and and hence the current will be zero.

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How do you find the voltage drop of an inductor?

Since the voltage drop across the resistor, VR is equal to I*R (Ohms Law), it will have the same exponential growth and shape as the current. However, the voltage drop across the inductor, VL will have a value equal to: Ve(-Rt/L).

Why is power consumed in an inductor and capacitor is zero?

In short, in a circuit where voltage or current leading or lagging 90° (phase difference = 90°) behind each other, the positive cycle cancel the negative which leads to the zero average power of the circuit i.e. the total power factor of the ac circuit is zero which leads to the zero average power.

Does the fact that the average current is zero in a resistor mean that the average power consumed is zero?

The power consumption in an AC circuit is zero when circuit contains only inductance or capacitance. So, for the given option when indutance is very high and resistance is negligible, then power consumed is zero.

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Why does voltage lead current in an inductor?

The voltage across an inductor “leads” the current because of the Lenz’s law. Therefore, the phasor representing the current and voltage would be given as in.

Is there a voltage drop across an inductor?

Yes, if you are talking about steady state sinusoidal signals. If you are talking about DC steady state, then the voltage is zero across an ideal inductor. I know the voltage drop across an inductor is related to the rate of change in current across the inductor but since the current is AC then there is constantly a rate of change?

Why is the average voltage across an ideal inductor always zero?

“The average voltage across an ideal inductor is always zero” actually means the average voltage over a period is zero (otherwise it’s meaningless to impose such condition). That is, here we assume that the voltage across an inductor is periodic.

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Why is the DC resistance of an inductor zero?

The DC resistance of an ideal inductor is zero. If a DC current is flowing through it, the resulting voltage across the inductor is zero. The average voltage is the DC component of the voltage. The fact that the average pure inductor is zero can be proven from the equation.

What is the average power of an inductor during half cycle?

In -ve half cycle, it release the stored energy, (irrespective of whether source is present or not). So average power across inductor is zero. draw the voltage wave form across it and corresponding current wave form and multiply both the signals u ll realise Y it is zero.