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Wednesday, 15 April 2026
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Physics Past Questions and Answers

Topic: Types and functions of capacitors

Jamb Physics Questions - Types and functions of capacitors

Question 1:
The function of a 5-A fuse included in a circuit supplying a household refrigerator with power is to keep the
  • A Temperature of the refrigerator low and constant
  • B Keep current supplied to the refrigerator below 5A
  • C Voltage supply constant
  • D Current supplies to the refrigeration
View Answer & Explanation
Question 2:
Which of the following devices may be used to step up the voltage in a d.c. circuit?
  • A A step-up transformer
  • B A d.c. generator
  • C A wattmeter
  • D An induction coil
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Question 3:
If the capacitance of an capacitor is C = (εA)/d, which of the following parameters is varied when a variable capacitors is used for tuning radio sets?
  • A Constant (ε) and area
  • B Area and distance.
  • C Constant (ε) only
  • D Distance only
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Question 4:
What charge is stored in a 0.1F capacitor when a 10V supply is connected across it?
  • A 1C
  • B 5C
  • C 4C
  • D 2C
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Question 5:
A supply of 400V is connected across capacitors of 3μf and 6μf in series. Calculate the charge
  • A 8 x 10\(^{-4}\)C
  • B 4 x 10\(^{-2}\)C
  • C 8 x 10\(^{-3}\)C
  • D 4 x 10\(^{-8}\)C
View Answer & Explanation