Physics

Problem

a. Calculate the rms value of an ac source whose peak voltage is

282\,\text{V}

. b. The same voltage is applied to a series circuit with

R = 20\,\Omega

L = 0.15\,\text{H}

and

C = 40\,\mu\text{F}

. Determine the ratio of the rms currents at supply frequencies of (i)

40\,\text{Hz}

and (ii)

80\,\text{Hz}

, and state which frequency gives the larger current.