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Physics JAMB Past Questions

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1491
If NEPA charges 5k per kWhr, what is the cost of operating for 24 hours a lamp required 1A on a 200v line?
  • A. 24k
  • B. 55k
  • C. 40k
  • D. 26k
  • E. 32k
View Answer & Discuss (10) JAMB 1978
1492
A magnet is moved through a coil of wire. The e.m.f. produced in the wire depends on
  • A. the number of turns in the coil
  • B. the strength of the magnet
  • C. the speed at which the magnet is moved
  • D. all of the above
  • E. none of the above
View Answer & Discuss (1) JAMB 1978
1493

In order to convert a galvanometer into an ammeter

  • A. a low resistance shunt is connected in parallel
  • B. a low resistance shunt is connected in series
  • C. a medium resistance shunt is connected in series
  • D. a high resistance shunt is connected in parallel
  • E. a high resistance shunt is connected in series
View Answer & Discuss (6) JAMB 1978
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1494
In a D.C. circuit, a 10 microfarad (mf) capacitor is placed in series with a 10 0hm resistor. The total resistance of the combination is
  • A. 10 ohms
  • B. 1 ohms
  • C. zero
  • D. 20 ohms
  • E. infinite
View Answer & Discuss (10) JAMB 1978
1495

On an a.c generator, which of the following does not apply?

  • A. field magnet
  • B. commutator
  • C. armature
  • D. slip rings
  • E. carbon brushes
View Answer & Discuss (8) JAMB 1978
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