Alternating CurrentHard

Question

In the circuit shown in figure, if both the bulbs B1 and B2 are identical :
                                                   

Options

A.their brightness will be the same   
B.B2 will be brighter than B1
C.as frequency of supply voltage is increased the brightness of bulb B1 will increase and that of B2 will decrease.
D.only B2 will glow because the capacitor has infinite impedance

Solution

IC =
Brightness of  B1 = IC2 R   
B1  = IC2 R
IL =
Brightness of B2 = IL2 R
B2  = IL2 R
here IL > IC     So, B2 will be brighter.

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