Variation of voltage with time is shown in figure.
The rms voltage is found to be ,. Find N.
In such cases it is difficult to develop a single equation.
Hence, it is usual to consider two equations, one applicable from 0 to 1 ms and another from 1 to 2 ms.
For t lying between 0 and 1 ms, V1 = 4. For t lying between 1 and 2 ms, V2 = -4t+4.
(a)
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A current is made up of two components 3A DC component and AC component given by . The effective value of current is
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