A circuit consists of a 10-mH coil,a 12-W resistor,a 6.0-W resistor,a 9.0-V battery and a switch,all in series.What is the time constant of this circuit?
A) 9.0 x 10-2 s
B) 2.5 x 10-3 s
C) 1.4 x 10-4 s
D) 5.6 x 10-4 s
Correct Answer:
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