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Multiple Choice
An LR circuit with L = 0.1 H and R = 10 Ω are connected to a battery with the circuit initially broken. When the circuit is closed, how much time passes until the current reaches half of its maximum value?
A
6.9×10−5 s
B
6.9×10−3 s
C
0.69 s
D
Not enough information to tell
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