Q2 of 31 Page 266

The peak voltage of an A.C. supply is 300 V. What is the rms voltage?

Given: Peak voltage of an A.C. supply, Vpeak = V0 = 300 V

The root mean square voltage can be calculated as follows:


Vrms = V0/√2


Vrms = (300V)/√2


⇒ Vrms = 212.1 V


More from this chapter

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1

A 100Ω resistor is connected to a 220 V, 50 Hz A.C. supply.

(a) What is the rms value of current in the circuit?


(b) What is the net power consumed over a full cycle?

 2

The rms value of current in an A.C. circuit is 10 A. What is the peak current?

 3

A 44 mH inductor is connected to 220 V, 50 Hz A.C. supply. Determine the rms value of the current in the circuit.

 4

A 60 μF capacitor is connected to a 110 V, 60 Hz A.C. supply. Determine the rms value of the current in the circuit.