JEE Main & Advanced
Sample Paper
JEE Main - Mock Test - 34
question_answer
An inductor, three resistors and a battery of 90 volt are connected in circuit as shown. Switch 'S" is closed for a long time, let the current in \[10\Omega \] is\[{{i}_{1}}\]. Now switch 'S" is suddenly opened, let the current in \[10\Omega \] is \[{{i}_{2}}\]. The ratio of \[{{i}_{1}}/{{i}_{2}}\] is
A)\[1\]
B) \[3\]
C)\[4.5\]
D) \[1.5\]
Correct Answer:
B
Solution :
[b] At steady state, \[{{i}_{1}}=4.5amp\] After switch is opened \[{{i}_{2}}=1.5\,amp\] \[\frac{{{i}_{1}}}{{{i}_{2}}}=3\]