The resistance of the series combination of two resistances is S. When they are joined in parallel the total resistance is P. If S = nP, then the minimum possible value of n is [2004]

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a)4

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An alternating voltage source is connected in series with a resistance R and an inductance L. If the potential drop across the resistance is 200 V and across the inductance is 150 V, then the applied voltage is:

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