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Physics 1988 JAMB Past Questions

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31

A household refrigerator is rated 200 watts. If electricity costs 5k per kWh, what is the cost of operating it in 20 days?

  • A. N4.80
  • B. N48.00
  • C. N480.00
  • D. N4800.00
View Answer & Discuss (19) JAMB 1988
32

Which of the following ammeters may be used to measure alternating currents? i. moving-coil ammeter ii. moving-iron ammeter iii. hot-wire ammeter

  • A. i and ii only
  • B. ii and iii only
  • C. i and iii only
  • D. i, ii, and iii
View Answer & Discuss (15) JAMB 1988
33
The principle of operation of an induction coil is based on
  • A. Ohm's law
  • B. Amphere's law
  • C. Faraday's law
  • D. Columbs law
View Answer & Discuss (3) JAMB 1988
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34
A dynamo primarily combines
  • A. mechanical energy into electrical energy
  • B. electrical energy into kinetic energy
  • C. potential energy into kinetic energy
  • D. kinetic energy into potential energy
View Answer & Discuss (4) JAMB 1988
35
In a certain fusion reaction, a deuteron (\(^{2}_{1}H\)) interacts with a triton (\(^{3}_{1}He\)) and produces an a-particle (\(^{4}_{2}He\)) and a second product. The second product is
  • A. a proton
  • B. an electron
  • C. a neutron
  • D. a gamma ray
View Answer & Discuss (2) JAMB 1988
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