**Question 5: If the peak values of a sine wave is 1000 volts, what is the effective value (E**_{ff})?

**ANSWER**

The sine wave of an alternating voltage is given by V = V_{m}sinωt. Here V is the instantaneous voltage, V_{m} is the maximum voltage during the period and ω is the angular velocity of the voltage.

The effective value of such a voltage is given by V_{rms}. We know that

In the given problem, V_{m} = 1000 V. Put this value in the above equation.

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