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

Answer
Answer : (d)
Explanation
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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

Answer
Answer : (a)
Explanation
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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

Answer
Answer : (b)
Explanation
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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

Answer
Answer : (d)
Explanation
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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

Answer
Answer : (b)
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