An inductor `(L = 200 mH)` is connected to an `AC` source of peak `emf 210 V` and frequency `50 Hz`. Calculate the peak current. What is the instantaneous voltage of the source when the current is at its peak value?

Explanation

To solve the problem step by step, we will calculate the peak current through the inductor connected to an AC source and then determine the instantaneous voltage when the current is at its peak value.

### Step 1: Identify the given values
- Inductance, \( L = 200 \, \text{mH} = 200 \times 10^{-3} \, \text{H} = 0.2 \, \text{H} \)
- Peak emf, \( E_0 = 210 \, \text{V} \)
- Frequency, \( f = 50 \, \text{Hz} \)

### Step 2: Calculate the angular frequency \( \omega \)
...