The effective value of current in a 50 cycle a.c. circuit is 5.0 A. What is the value of current `(1//300)` s after it is zero ?

Explanation

To solve the problem, we need to find the value of the alternating current (AC) at a specific time after it has reached zero. We know the effective value of the current (I_eff) and the frequency of the AC circuit.

### Step 1: Understand the relationship between effective current and peak current
The effective (or root mean square, RMS) value of the current in an AC circuit is related to the peak current (I₀) by the formula:
\[ I_{\text{eff}} = \frac{I_0}{\sqrt{2}} \]

Given that \( I_{\text{eff}} = 5.0 \, \text{A} \), we can find the peak current \( I_0 \):
\[ I_0 = I_{\text{eff}} \cdot \sqrt{2} = 5.0 \cdot \sqrt{2} \]
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