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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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371
The diagram above illustrates an isolated metal sphere carrying charge W in a medium whose permittivity is so. The magnitude of the electric field intensity at P can be expressed as
  • A. Q2/(4πεor2)
  • B. Q/(4πεor2)
  • C. Q/(4πεor)
  • D. Q2/(4πεor2)
  • E. Q/(4πεor) 2
View Answer & Discuss WAEC 1996
372
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
373

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
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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374
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
375
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
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