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inductance of two loops is x10-H
38. For the circuit shown, the switch is thrown
quickly from a to b. The time elapsed
before the voltage across the inductor drops
to 12 V is xx104 S. The value of x is (Take
log, (101) = 4.6)
a
b
1200 2
2 H
12 V T
ww
12 2

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