The AC mains domestic supply current in India changes direction in every

Correct option is D

In India, the AC mains supply operates at a frequency of 50 Hz. This frequency means 50 cycles per second. 1. Cycle Analysis: · A complete cycle in AC supply consists of two direction changes: from positive to negative and then back to positive. · Since the frequency is 50 cycles per second, each complete cycle takes 1/50 seconds. 2. Direction Change: · Within each cycle, the current changes direction twice. · Therefore, the time for each direction change is half of 1/50 seconds. 3. Final Calculation: · Time for each direction change = 1 / (2 × 50) = 1/100 seconds. So, the correct answer is (d) 1/100 s.