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An alternating voltage given by E = 280 ...

An alternating voltage given by `E = 280 sin 50 pit` is connected across pure resistor of `40 Omega`. Find frequency of the source.

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MODERN PUBLICATION-ALTERNATING CURRENTS-EXERCISE
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  16. An inductor L of inductance X(L) is connected in series with a bulb B ...

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  17. An inductor L of inductance X(L) is connected in series with a bulb B ...

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