The power supply that runs at our homes

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Target Exam

CUET

Subject

Physics

Chapter

Alternating Current

Question:

The power supply that runs at our homes is 220 V. What is the r.m.s. value of the power supply at our homes?

Options:

311 V

220 V

440 V

160 V

Correct Answer:

220 V

Explanation:

220 V is the r.m.s. value of the voltage received at our homes. The peak voltage is given as : V = 1.414 x 220 V = 311 V