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Physics 1996 WAEC Past Questions

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51
The electric potential at point P in the diagram above can be expressed as
  • A. Q2/(4πεor2)
  • B. Q/(4πεor2)
  • C. Q/(4πεor)
  • D. Q2/(4πεor2)
  • E. Q/(4πεor) 2
View Answer & Discuss (4) WAEC 1996
52

Calculate the amount of heat generated in an external load of resistance  8Ω if an alternating current of peak value 5A is passed through for 100s.

  • A. 20,000J
  • B. 10,000J
  • C. 5,000J
  • D. 4,000J
  • E. 200J
View Answer & Discuss (15) WAEC 1996
53
ln the diagram above, the resistor has a resistance 8 Ω while the reactances of the inductor and the capacitor are 10 Ω and 16 Ω respectively Calculate the current in the circuit
  • A. 3.6A
  • B. 3.8A
  • C. 9.2A
  • D. 10.0A
  • E. 13.0A
View Answer & Discuss (2) WAEC 1996
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54
The resistance in a series R-C circuit is 5 Ω. If the impedance of the circuit is 13 Ω, calculate the reactance of the capacitor
  • A. 65 Ω
  • B. 18 Ω
  • C. 16 Ω
  • D. 14 Ω
  • E. 12 Ω
View Answer & Discuss (3) WAEC 1996
55
What is the decay constant of a radioactive element whose half-life is 3 seconds
  • A. 0.132s-1
  • B. 0.23s-1
  • C. 0.347s-1
  • D. 0.693s-1
  • E. 0.924s-1
View Answer & Discuss (5) WAEC 1996
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