Free Version
Difficult

# Current in an RC Circuit

EANDM-HV1IMR

In the circuit below the switch is moved to A after being at B for a very long time and the capacitor begins to charge. The circuit parameters are: $\Delta V = 25 \:\text V$, $R = 560 \:\text k \Omega$, $C= 350 \:\text {pF}$.

What is the current in the resistor at $t=100 \: \mu \text s$?

A

$44.6 \:\mu \text A$

B

$22.3 \:\mu \text A$

C

$31.5 \:\mu \text A$

D

$1.44 \:\mu \text A$

E

$26.8 \:\mu \text A$