Question

There is a current of 20 mA passing through an ideal inductor when connected to a 100 V, 20 Hz supply. The power consumed is

1 W

25 W

39 W

Zero​

Answer 1

Answer:

,

Explanation:

Hope this helps!!

Answer 2

Answer:

The solution is Zero (option d).

Explanation:

An inductor is an electronic device that is made up of an insulator wire-wound up to a coil.

The ratio of magnetic flux to current is defined as Inductance.

Here given the value of $I_{rms} = 20 mA$ and $V_{rms}= 100V$.

So, for calculating power, we need   $I_{rms} ,V_{rms},power factor(cos\phi)$.

The power factor is zero in a Purely inductive circuit as there is no resistance here and the power factor is defined as the ratio of resistance (R) to the total impedance (Z) of the circuit i.e.    $Cos\phi=\frac{R}{Z}$

Here R is absent. So, R=0 and hence    $Cos\phi=\frac{0}{Z}=0$.

Now, by using the formula:-

$P= V_{rms}I_{rms}Cos\phi=100\times20\times10^{-3}\times0=0$

Hence, the power consumed in the circuit is Zero.