The household supply of electricity is at 220 V (rms value) and 50 Hz. Find the peak voltage and the least possible time in which the voltage can change from the rms value to zero.

Given that

Frequency= 50 Hz


Then, Peak voltage ( is given as





Now, time taken for the current to reach the peak value= time taken to reach the zero value from rms






Where, f is the frequency, t is time taken and is angular velocity.


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