A domestic appliance draws 2.5 A from a 220 V, 50 Hz power supply. The amplitude of current is
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → 3.5 A
The current quoted for an a.c. appliance is the rms value. The amplitude (peak value) is \( \sqrt{2} \) times the rms value.
\( \displaystyle I_0 = \sqrt{2}\,I_{\mathrm{rms}} = 1.414 \times 2.5\,\mathrm{A} = 3.54\,\mathrm{A} \approx 3.5\,\mathrm{A} \)