1.

A series R-C circuit is connected to an alternating voltage source. Consider two situations :- (a) When capacitor is air filled. (b) When capacitor is mica filled. Current through resistor is i and voltage across capacitor is V then :-

Answer»

`V_a=V_b`
`V_a lt V_b`
`V_a GT V_b`
`i_a gt i_B`

SOLUTION :When CAPACITOR is FILLED with mica, then its capacitance increases, so reactants `X_C` DECREASES. Now, the voltage of capacitor = i `X_c`, so it decreases. `therefore V_a gt V_b`


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