A Series LR Circuit Includes a 9 $\Omega$ ,And an Inductor

question 63

Multiple Choice

A series LR circuit includes a 9.0 V battery,a resistance of 0.20 $\Omega$ ,and an inductor.When the switch is closed,the circuit exhibits a time constant of 200 ms.What is the inductance of the circuit?

• A) 42 mH
• B) 15 mH
• C) 32 mH
• D) 40 mH
• E) 22 mH

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