A circuit contains a 6.0-V battery,a 4.0-W 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-W 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

Immediately after the switch is closed, the capacitor will act as a short circuit because it is uncharged. Therefore, the circuit becomes a simple series circuit of battery, resistor, ammeter and the capacitor will not come into effect. Using Ohm's law, the current through the circuit will be I = V/R = 6/4 = 1.5 A. Thus, the correct answer is choice C.

A Circuit Contains a 6