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Physics Past Questions

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106

The force on a current carrying conductor in a magnetic field is greatest when the

  • A. conductor makes an angle of 60° with the field
  • B. force is independent of the angles between the fields and the conductor
  • C. conductor is parallel with the field
  • D. conductor is at right angle with the field
View Answer & Discuss (2) JAMB 2001
107

A transistor function mainly as a

  • A. switch and amplifier
  • B. rectifier and an amplifier
  • C. charge storer and an amplifier
  • D. charge storer and a switch
View Answer & Discuss (15) JAMB 2001
108

Energy losses through eddy currents are reduced by using

  • A. low resistance wires
  • B. insulated soft iron wires
  • C. few turns of wires
  • D. high resistance wires
View Answer & Discuss (9) JAMB 2001
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109

A capacitor of 20 x 10\(^{-12}\)F and an inductor are joined in series. The value of the inductance that will give the circuit a resonance frequency of 200 kHz is

  • A. \(\frac{I}{16}\) H
  • B. \(\frac{I}{8}\) H
  • C. \(\frac{I}{64}\) H
  • D. \(\frac{I}{32}\) H
View Answer & Discuss (8) JAMB 2001
110
The magnetic force on a charged particle moving with velocity v is
  • A. proportional to both the magnitude of the charge and the velocity v
  • B. independent of the magnitude of the charge
  • C. proportional to the velocity v only
  • D. proportional to the magnitude of the charge only
View Answer & Discuss (1) JAMB 2001
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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