In the circuit, with emf = 25 V, the battery and the inductor have no appreciabl
ID: 1270103 • Letter: I
Question
In the circuit, with emf = 25 V, the battery and the inductor have no appreciable internal resistance and there is no current in the circuit. Assume that R = 14.5? and L = 12.0mH .
A) Immediately after the switch is closed, find the reading of the ammeter A.
I1 = ________ A
B) Immediately after the switch is closed, find the readings of the voltmeters (V1 and V2).
V1 = __________ V
V2 = __________ V
C) Find the readings of the voltmeters (V1 and V2) after the switch has been closed for a very long time.
D) Which answers in parts A, B, C and D would change if the inductance were 2.40
Explanation / Answer
a)
Immediately after switch is closed inductor acts as open circuit
I1=0 A
b)
Immediately after switch is closed inductor acts as open circuit
V1=0 V
V2=25 V
c)
After long time inductor acts as short circuit
V1=25 V
V2=0 V
d)
None of the answers would change