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Sunday, 21 June 2026
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Physics Past Questions and Answers

Topic: Parallel plate capacitors

Jamb Physics Questions - Parallel plate capacitors

Question 21:
when a piece of rectangular glass block is inserted between two parallel capacitor,at constant plate area and distance of separation, the capacitance of the capacitor will
  • A Increase
  • B Decrease
  • C Decrease then increase
  • D Remain constant
View Answer & Explanation
Question 22:
Calculate the electric field intensity between two plates of potential difference 6.5V when separated by a distance of 35cm.
  • A 18.57NC\(^{-1}\)
  • B 53.06N C\(^{-1}\)
  • C 2.28NC\(^{-1}\)
  • D 0.80NC\(^{-1}\)
View Answer & Explanation
Question 23:
The net capacitance in the circuit above is
  • A 80µF
  • B 6.0µF
  • C 4.0µF
  • D 2.0µF
View Answer & Explanation
Question 24:
From the diagram above, calculate the energy stored in the capacitor
  • A 4.0 x 10\(^{-2}\)J
  • B 4.0 x 10\(^{-4}\)J
  • C 8.0 x 10\(^{-4}\)J
  • D 8.0 x 10\(^{-2}\)J
View Answer & Explanation
Question 25:
Calculate the effective capacitance of the circuit in the diagram given
  • A 4μf
  • B 3μf
  • C 2μf
  • D 1μf
View Answer & Explanation