Question

In a circuit, the value of the alternating current is measured by hot wire ammeter as 10 ampere. Its peak value will be

• A. 10 A
• B. 20 A
• C. 14.14 A
• D. 7.07 A

Answer 1

Answer: (C)

14.14 A

Answer 2

Hot wire ammeter reads rms value of current. Hence its peak value $= i_{rms} \times \sqrt{2} = 14.14\mspace{6mu} amp$