Electro Magnetic Induction And Alternating Currents Question 98
Question: The r.m.s. voltage of domestic electricity supply is 220 volt . Electrical appliances should be designed to withstand an instantaneous voltage of
Options:
A) 220 V
B) 310 V
C) 330 V
D) 440 V
Show Answer
Answer:
Correct Answer: B
Solution:
Peak voltage $ =\sqrt{2}\times 220=311\ V $
