An `AC` voltage source of variable angular frequency `omega` and fixed amplitude `V_(0)` is connected in series with a capacitance `C` and an electric bulb of resistance `R` (inductance Zero). When `omega` is increase.

Options

A. the bulb glows dimmer
B. the bulb glows brighter
C. total impedance of the circuit is unchanged
D. total impedance of the circuit increases

Answer

B

Explanation

In `RC` circuit, the impedance is
`Z = sqrt(R^(2) + (1)/(omega^(2) C^(2))` , As `omega` increase, `Z` decreases.
Since, Power `prop (1)/("impedance")` Therefore, the bulb glow brighter.