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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
NECO offline past questions - All questions, answers & explanations in one app 25712
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186
A transistor is used in the amplification of signals because it
  • A. controls the flow of current
  • B. consumes a lot of power
  • C. allows doping
  • D. contains electron and hole carriers
View Answer & Discuss (3) JAMB 2002
187
The carbon-granules microphone works on the principle of change in
  • A. inductance
  • B. resistance
  • C. capacitance
  • D. voltage
View Answer & Discuss (1) JAMB 2002
188
At what frequency would a capacitor of 2.5μF
used in radio circuit have a resistance of 250Ω
  • A. π/800 Hz
  • B. 800/π Hz
  • C. 200π Hz
  • D. 2000π Hz
View Answer & Discuss (3) JAMB 2002
NECO offline past questions - All questions, answers & explanations in one app 25712
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
189

A current of 0.5 A flowing 3h Deposits 2g of metal during electrolysis. The quantity of the same metal that would be deposited by the currents of 1.5A flowing in 1h is

  • A. 2g
  • B. 6g
  • C. 10g
  • D. 18g
View Answer & Discuss (3) JAMB 2002
190

Which of the following statements is true of the properties of a moving coil galvanometer?

  • A. THe coil has a small area
  • B. There are strong hair springs to gives a large control panlel
  • C. There is a strong permanent magnet to give high magnetic flux
  • D. it has a small number of turns of coil
View Answer & Discuss (15) JAMB 2002
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts