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Electricity and Magnetism MCQs

Practice important Electricity and Magnetism MCQs with answers, explanations, theory links, and exam-focused preparation.

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Electricity and Magnetism

Electricity and Magnetism MCQs With Answers

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CSS - PMS - CCE - PCS - Everyday Science Electricity and Magnetism
An ideal transformer has Vp=1000 V, Np=100, Ns=1000. Secondary voltage is:
A. 10001 V
B. 9999 V
C. 10000 V
D. 10002 V
Correct Answer: C
Vs/Vp = Ns/Np.
CSS - PMS - CCE - PCS - Everyday Science Electricity and Magnetism
An ideal transformer has Vp=1000 V, Np=100, Ns=400. Secondary voltage is:
A. 4000 V
B. 4001 V
C. 4002 V
D. 3999 V
Correct Answer: A
Vs/Vp = Ns/Np.
CSS - PMS - CCE - PCS - Everyday Science Electricity and Magnetism
An ideal transformer has Vp=1000 V, Np=100, Ns=50. Secondary voltage is:
A. 500 V
B. 502 V
C. 499 V
D. 501 V
Correct Answer: A
Vs/Vp = Ns/Np.
CSS - PMS - CCE - PCS - Everyday Science Electricity and Magnetism
An ideal transformer has Vp=240 V, Np=500, Ns=1000. Secondary voltage is:
A. 479 V
B. 481 V
C. 482 V
D. 480 V
Correct Answer: D
Vs/Vp = Ns/Np.
CSS - PMS - CCE - PCS - Everyday Science Electricity and Magnetism
An ideal transformer has Vp=240 V, Np=500, Ns=400. Secondary voltage is:
A. 193 V
B. 194 V
C. 192 V
D. 191 V
Correct Answer: C
Vs/Vp = Ns/Np.
CSS - PMS - CCE - PCS - Everyday Science Electricity and Magnetism
An ideal transformer has Vp=240 V, Np=500, Ns=50. Secondary voltage is:
A. 23 V
B. 24 V
C. 26 V
D. 25 V
Correct Answer: B
Vs/Vp = Ns/Np.
CSS - PMS - CCE - PCS - Everyday Science Electricity and Magnetism
An ideal transformer has Vp=240 V, Np=200, Ns=1000. Secondary voltage is:
A. 1201 V
B. 1202 V
C. 1200 V
D. 1199 V
Correct Answer: C
Vs/Vp = Ns/Np.
CSS - PMS - CCE - PCS - Everyday Science Electricity and Magnetism
An ideal transformer has Vp=240 V, Np=200, Ns=400. Secondary voltage is:
A. 480 V
B. 479 V
C. 482 V
D. 481 V
Correct Answer: A
Vs/Vp = Ns/Np.
CSS - PMS - CCE - PCS - Everyday Science Electricity and Magnetism
An ideal transformer has Vp=240 V, Np=200, Ns=50. Secondary voltage is:
A. 62 V
B. 59 V
C. 60 V
D. 61 V
Correct Answer: C
Vs/Vp = Ns/Np.
CSS - PMS - CCE - PCS - Everyday Science Electricity and Magnetism
An ideal transformer has Vp=240 V, Np=100, Ns=1000. Secondary voltage is:
A. 2401 V
B. 2399 V
C. 2400 V
D. 2402 V
Correct Answer: C
Vs/Vp = Ns/Np.
CSS - PMS - CCE - PCS - Everyday Science Electricity and Magnetism
An ideal transformer has Vp=240 V, Np=100, Ns=400. Secondary voltage is:
A. 962 V
B. 961 V
C. 959 V
D. 960 V
Correct Answer: D
Vs/Vp = Ns/Np.
CSS - PMS - CCE - PCS - Everyday Science Electricity and Magnetism
An ideal transformer has Vp=240 V, Np=100, Ns=50. Secondary voltage is:
A. 122 V
B. 121 V
C. 120 V
D. 119 V
Correct Answer: C
Vs/Vp = Ns/Np.
CSS - PMS - CCE - PCS - Everyday Science Electricity and Magnetism
An ideal transformer has Vp=120 V, Np=500, Ns=1000. Secondary voltage is:
A. 242 V
B. 240 V
C. 241 V
D. 239 V
Correct Answer: B
Vs/Vp = Ns/Np.
CSS - PMS - CCE - PCS - Everyday Science Electricity and Magnetism
An ideal transformer has Vp=120 V, Np=500, Ns=400. Secondary voltage is:
A. 95 V
B. 96 V
C. 97 V
D. 98 V
Correct Answer: B
Vs/Vp = Ns/Np.
CSS - PMS - CCE - PCS - Everyday Science Electricity and Magnetism
An ideal transformer has Vp=120 V, Np=500, Ns=50. Secondary voltage is:
A. 13 V
B. 12 V
C. 11 V
D. 14 V
Correct Answer: B
Vs/Vp = Ns/Np.
CSS - PMS - CCE - PCS - Everyday Science Electricity and Magnetism
An ideal transformer has Vp=120 V, Np=200, Ns=1000. Secondary voltage is:
A. 602 V
B. 600 V
C. 601 V
D. 599 V
Correct Answer: B
Vs/Vp = Ns/Np.
CSS - PMS - CCE - PCS - Everyday Science Electricity and Magnetism
An ideal transformer has Vp=120 V, Np=200, Ns=400. Secondary voltage is:
A. 242 V
B. 239 V
C. 241 V
D. 240 V
Correct Answer: D
Vs/Vp = Ns/Np.
CSS - PMS - CCE - PCS - Everyday Science Electricity and Magnetism
An ideal transformer has Vp=120 V, Np=200, Ns=50. Secondary voltage is:
A. 31 V
B. 30 V
C. 29 V
D. 32 V
Correct Answer: B
Vs/Vp = Ns/Np.
CSS - PMS - CCE - PCS - Everyday Science Electricity and Magnetism
An ideal transformer has Vp=120 V, Np=100, Ns=1000. Secondary voltage is:
A. 1201 V
B. 1202 V
C. 1200 V
D. 1199 V
Correct Answer: C
Vs/Vp = Ns/Np.
CSS - PMS - CCE - PCS - Everyday Science Electricity and Magnetism
An ideal transformer has Vp=120 V, Np=100, Ns=400. Secondary voltage is:
A. 480 V
B. 482 V
C. 481 V
D. 479 V
Correct Answer: A
Vs/Vp = Ns/Np.
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