Question

The peak value of 220 volts of ac mains is

• A. 155.6 volts
• B. 220.0 volts
• C. 311.0 volts
• D. 440 volts

Answer 1

Answer: (C)

311.0 volts

Answer 2

Peak value =$220\sqrt{2} = 311\mspace{6mu} V$