The maximum values of the alternating voltage and current are 400 V and 20 A respectively in a circuit connected to 50 Hz supply and these quantities are sinusoidal. The instantaneous values of the voltage and current are 283 V and 10 A respectively at t = 0, both increasing positively. Write down the expression for voltage and current at time t and determine its phase difference and indicate which quality leads or lags the other.

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Author:Robert L. Boylestad
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The maximum values of the alternating voltage and current are 400 V and
20 A respectively in a circuit connected to 50 Hz supply and these quantities
are sinusoidal. The instantaneous values of the voltage and current are 283
V and 10 A respectively at t = 0, both increasing positively. Write down the
expression for voltage and current at time t and determine its phase
difference and indicate which quality leads or lags the other.
Transcribed Image Text:The maximum values of the alternating voltage and current are 400 V and 20 A respectively in a circuit connected to 50 Hz supply and these quantities are sinusoidal. The instantaneous values of the voltage and current are 283 V and 10 A respectively at t = 0, both increasing positively. Write down the expression for voltage and current at time t and determine its phase difference and indicate which quality leads or lags the other.
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