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Valentin [98]
3 years ago
13

A resistor and an inductor are connected in series to a battery. The battery is suddenly removed from the circuit. The time cons

tant for of the circuit represents the time required for the current to decrease to . a) 50% of the original value. b) 75% of the original value. c) 37% of the original value. d) 25% of the original value. e) 63% of the original value
Physics
2 answers:
viva [34]3 years ago
8 0
The time constant is how long will the current decrease by 1/e. The numerical value of this is approximately equal to 0.37. Since we are looking at the decrease which is equal to 1 less than this value, the answer would be 0.63. Thus, the answer to this item is letter E. 
Vladimir79 [104]3 years ago
3 0
E, 63% of the value. I forget the rationale behind it but I learnt that in engineering. 90% confident for that answer.
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