An 8.0-V battery is connected to an RC circuit (R = 19 Ω and C = 1.3 μF). If the capacitor is initially uncharged, what is the current in the circuit immediately after the connection is made?

O.421 A

Explanation:

Immediately after the connection is made, there is no voltage across the capacitor (it is initially uncharged).

And since the circuit elements are connected in series with each other, current in the circuit is potential difference across divided by the resistance along the path. That is,

I = (Vs - Vc)/R

where Vs is the voltage from the voltage source = 8 V

Vc = Voltage across the capacitor = 0 V at this moment.

R = Resistance in the circuit = 19 ohms

I = 8/19 = 0.421 A

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