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Physics WAEC Past Questions

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306

A capacitor of capacitance 25μF is connected to an a.c. power source of frequency 200 Hz. Calculate the reactance of the capacitor

  • A. 0.01
  • B. 0.02
  • C. 50.00
  • D. 100.00
  • E. 200.00.
View Answer & Discuss (7) WAEC 1995
307

The energy stored in a capacitor of capacitance 5μF is 40J. Calculate the voltage applied across its terminals?

  • A. 4000V
  • B. 200V
  • C. 16V
  • D. 6V
  • E. 4V
View Answer & Discuss (17) WAEC 1995
308
The effective capacitance between points X and Y in the diagram below is 1.0μF, What is the value of the capacitance C, measured in micro-farad?
  • A. 5.0μF
  • B. 4.0μF
  • C. 3.0μF
  • D. 1.0μF
  • E. 0.5μF
View Answer & Discuss (6) WAEC 1995
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309
Calculate the quantity charge flowing through a conductor if a current of 10A passes through the conductor for 10s.
  • A. 100C
  • B. 20C
  • C. 15C
  • D. 10C
  • E. 1C
View Answer & Discuss (1) WAEC 1995
310
An alternating current, having the waveform shown in the diagram above, is represented by the equation x = Xo sinwt. Which of the following represents Xo?
  • A. OS
  • B. OR
  • C. PQ
  • D. RT
  • E. OT
View Answer & Discuss WAEC 1995
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