Question

A `30 mu F` capacitor is connected to a 150 V, 60 Hz ac supply. The rms value of current in the circuit is
A. 17 A
B. `1.7 A`
C. `1.7 mA`
D. `2.7 A`

Answer 1

Correct Answer - B
Here, `C = 30xx10^(-6)F, V_("rms")=150V, upsilon = 60 Hz`
Capacitive reactance
`X_(C )=(1)/(omega C)=(1)/(2pi upsilon C)=88.46 Omega`
`I_("rms")=(V_("rms"))/(X_(C ))=(150)/(88.46)=1.7 A`