Networks Analysis and Synthesis - Engineering

Q1:

A 10 μF capacitor is charged from a 5 volt source through a resistance of 10 kΩ. The charging current offer 35 m sec. If the initial voltage on C is - 3 V is

A 0.56 mA

B 5.6 mA

C 6 mA

D 5 μA

ANS:A - 0.56 mA

Initial current immediately after charging = i = i0e-t/RC 0.8 mA x 0.8 x 10-3 0.56 mA.