A circuit contains a 6.0-V battery,a 4.0-Ω resistor,a 0.60-µF capacitor,an ammeter,and a switch all in series.What will be the current reading immediately after the switch is closed?
A) zero
B) 0.75 A
C) 1.5 A
D) 10 A

Question

A circuit contains a 6.0-V battery,a 4.0-Ω resistor,a 0.60-µF capacitor,an ammeter,and a switch all in series.What will be the current reading immediately after the switch is closed? 
A) zero 
B) 0.75 A 
C) 1.5 A 
D) 10 A

Quizplus · Accepted Answer

When the switch is closed, the capacitor will initially act like a short circuit because it is uncharged. Therefore, the current will only be limited by the resistance of the circuit, which is given by Ohm's Law: 
I = V/R = 6.0 V / 4.0 Ω = 1.5 A. Thus, the current reading immediately after the switch is closed will be 1.5 A.

A Circuit Contains a 6