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 increased

Options

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

Answer

B

Explanation

`(I_(rms))=(V_(rms))/(sqrt(R^(2)+(1/(omega C))^(2)))`
As `(omega)` increses, `(I_(max))` increases. Therefore, the blub glows brighter.