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 :-

Options

A. `V_a=V_b`
B. `V_a lt V_b`
C. `V_a gt V_b`
D. `i_a gt i_B`

Answer

C

Explanation

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`