A $25 - \mathrm { mH }$ Inductor Is Connected in Series with A

question 244

Multiple Choice

A $25 - \mathrm { mH }$ inductor is connected in series with a $20 - \Omega$ resistor through an ideal $15 - \mathrm { V }$ dc power supply and a switch. If the switch is closed at time $t = 0 \mathrm {~s}$ , what is the current when $t = 2.0 \mathrm {~ms}$ ?

• A) \(0.80 \mathrm {~A}\)
• B) \(0.60 \mathrm {~A}\)
• C) \(0.40 \mathrm {~A}\)
• D) \(0.50 \mathrm {~A}\)
• E) \(0.70 \mathrm {~A}\)

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