1.27 When the current through an inductor is multiplied by three, the stored energy: (a) is multiplied by 3. (c) is divided by 3. (b) is divided by 9. (d) is multiplied by 9. 1.28 The current in a coil changes from 5 A to 1 A in 0.4 s. The induced voltage is 40 V. The inductance of the coil is: (a)1 H (b) 2 H (c) 4 H (d) 10 H 1.29 500 Ω 10 mH Figure Q1.29 In the circuit in Figure Q1.29, the battery has a potential difference of 12 V. The voltage across the inductor at the instant the switch is closed is: (a)-12 V (b) 0 V (c) 6 V (d) 12 V
1.27 When the current through an inductor is multiplied by three, the stored energy: (a) is multiplied by 3. (c) is divided by 3. (b) is divided by 9. (d) is multiplied by 9. 1.28 The current in a coil changes from 5 A to 1 A in 0.4 s. The induced voltage is 40 V. The inductance of the coil is: (a)1 H (b) 2 H (c) 4 H (d) 10 H 1.29 500 Ω 10 mH Figure Q1.29 In the circuit in Figure Q1.29, the battery has a potential difference of 12 V. The voltage across the inductor at the instant the switch is closed is: (a)-12 V (b) 0 V (c) 6 V (d) 12 V
Introductory Circuit Analysis (13th Edition)
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Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
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Question
B6
![1.27 When the current through an inductor is multiplied by three, the stored
energy:
(a) is multiplied by 3.
(c) is divided by 3.
(b) is divided by 9.
(d) is multiplied by 9.
1.28 The current in a coil changes from 5 A to 1 A in 0.4 s. The induced voltage
is 40 V. The inductance of the coil is:
(a)1 H
(b) 2 H
(c) 4 H
(d) 10 H
1.29
500 Ω
www
10 m H
Figure Q1.29
In the circuit in Figure Q1.29, the battery has a potential difference of 12
V. The voltage across the inductor at the instant the switch is closed is:
(a)-12 V
(b) 0 V
(c) 6 V
(d) 12 V
1.30 A sine wave with a period of 20 ms is changing faster than a sine wave
with a period of:
(a) 21 ms
(b) 10 ms
(c) 0.018 s
(d) 19.10-3 s
1.31 If the peak value of a sine wave voltage is 10 V, the r.m.s. value is:
(a) 0 V
(b) 6.37 V (c) 7.07 V
(d) 14.1 V
[continued]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F9fcf316d-4c5b-4168-a811-27bb916c461c%2F317a8979-d3e6-43fd-b955-524f70e81371%2F1s0akab_processed.jpeg&w=3840&q=75)
Transcribed Image Text:1.27 When the current through an inductor is multiplied by three, the stored
energy:
(a) is multiplied by 3.
(c) is divided by 3.
(b) is divided by 9.
(d) is multiplied by 9.
1.28 The current in a coil changes from 5 A to 1 A in 0.4 s. The induced voltage
is 40 V. The inductance of the coil is:
(a)1 H
(b) 2 H
(c) 4 H
(d) 10 H
1.29
500 Ω
www
10 m H
Figure Q1.29
In the circuit in Figure Q1.29, the battery has a potential difference of 12
V. The voltage across the inductor at the instant the switch is closed is:
(a)-12 V
(b) 0 V
(c) 6 V
(d) 12 V
1.30 A sine wave with a period of 20 ms is changing faster than a sine wave
with a period of:
(a) 21 ms
(b) 10 ms
(c) 0.018 s
(d) 19.10-3 s
1.31 If the peak value of a sine wave voltage is 10 V, the r.m.s. value is:
(a) 0 V
(b) 6.37 V (c) 7.07 V
(d) 14.1 V
[continued]
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