An 8microF capacitor is connected in series with a 0.5 megaohm

an-8microf-capacitor-is-connected-in-series-with-a-0-5-megaohm

An 8microF capacitor is connected in series with a 0.5 megaohm resistor. The DC voltage supply is 200V. Calculate the initial charging current.
A. 100 microA
B. 500 microA
C. 400 microA
D. 1000microA
The correct choice is C. 400 microA

In a series RC circuit, the initial charging current is:
I=V/R = 200/(0.5*10^6s) = 400*10^-6A = 400 microA.