Physics

Problem

A series RLC circuit has

R = 10\,\Omega

and

L = 40\,\text{mH}

. When driven at

400\,\text{Hz}

, the current amplitude is the same as that obtained at

900\,\text{Hz}

. The closest value of the circuit capacitance

C

is a)

4.0\,\mu\text{F}

1.6\,\mu\text{F}

1.0\,\mu\text{F}

2.5\,\mu\text{F}