# Inductors and Inductance – Exercise – 1

Inductors and Inductance » Exercise – 1

1. A 5 mH, a 4.3 mH, and a 0.6 mH inductor are connected in parallel. The total inductance is ________. (a) 9.9 mH (b) greater than 5 mH (c) 9.9 mH or greater than 5 mH (d) less than 0.6 mH

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2. A 240 μH inductor is equivalent to a ________. (a) 0.240 mH inductor (b) 0.000240 mH inductor (c) 240 mH inductor (d) 240 H inductor

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3. The voltage across a coil when di/dt = 20 mA/μs and L = 8 μH is ________. (a) 16 mV (b) 160 mV (c) 1.6 mV (d) 2.5 mV

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4. A 2 mH, a 3.3 mH, and a 0.2 mH inductor are connected in series. The total inductance is ________. (a) 55 mH (b) less than 0.2 mH (c) less than 5.5 mH (d) 5.5 mH

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5. An inductance of 0.08 μH is larger than ________. (a) 0.0000008 H (b) 0.000000008 H (c) 0.000008 H (d) 0.00008 mH