A 40.0- $\mu$ F capacitor is charged to 120 V and is then connected across a 500- $\Omega$ resistor. Just after the capacitor is connected to the resistor, the current through the resistor is
A) 4.8 A.
B) 4.2 A
C) 300 mA.
D) 240 mA.
E) 120 mA.

Question

Quizplus · Accepted Answer

The initial current through the resistor can be calculated using Ohm's Law, $ I = \frac{V}{R} $. The voltage across the capacitor is 120 V, and the resistance is 500 $\Omega$. Thus, $ I = \frac{120 \, \text{V}}{500 \, \Omega} = 0.24 \, \text{A} = 240 \, \text{mA} $.

A 400- μ\muμ F Capacitor Is Charged to 120 V and Is Then

A 400- $\mu$ F Capacitor Is Charged to 120 V and Is Then