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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 6:
A 5-v battery is connected across the plates of a 2.0\(\mu\)F uncharged parallel plate capacitor. The charge on the capacitor after a long time is
  • A 2.5\(\mu\)C
  • B 10.0\(\mu\)C
  • C 20.0\(\mu\)C
  • D 50.0\(\mu\)C
View Answer & Explanation
Question 7:
A parallel plate capacitor of area 10cm2 in vacuum has a capacitance of 10-2\(\mu\)F. What is the distance between the plates?(e[sub][/sub] = 9 x 10-12fm)
  • A 9 x 10<sup style='font-size: smaller;'>-13</sup>m
  • B 9 x 10<sup style='font-size: smaller;'>-7</sup>m
  • C 9 x 10<sup style='font-size: smaller;'>-3</sup>m
  • D 9 x 10<sup style='font-size: smaller;'>7</sup>m
View Answer & Explanation
Question 8:
Two parallel plates at a distance of 8.0 x 10-3m apart are maintained at a p.d of 600 volts with the negative plate earthed. What is the electric field strength?
  • A 4.8 Vm<sup style='font-size: smaller;'>-1</sup>
  • B 75.0Vm<sup style='font-size: smaller;'>-1</sup>
  • C 4800.0Vm<sup style='font-size: smaller;'>-1</sup>
  • D 75000.0Vm<sup style='font-size: smaller;'>-1</sup>
View Answer & Explanation
Question 9:
The purpose of a dielectric material in a parallel plate capacitor is to
  • A Increase its capacitance
  • B Decrease its capacitance
  • C Insulate the plate from each other
  • D Increase the magnetic field between the plates
View Answer & Explanation
Question 10:
Two 50\(\mu\)F parallel plate capacitors are connected in series. The combined capacitor is then connected across a 100-V battery. The charge on each plate of the capacitor is
  • A 5.00 x 10<sup style='font-size: smaller;'>-5</sup>C
  • B 2.50 x 10<sup style='font-size: smaller;'>-3</sup>C
  • C 1.25 x 10<sup style='font-size: smaller;'>-3</sup>C
  • D 1.00 x 10<sup style='font-size: smaller;'>-2</sup>C
View Answer & Explanation