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Tuesday, 05 May 2026
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Physics Past Questions and Answers

Jamb Physics Questions

Question 36:
A potential difference of 6v is used to produce a current of 5A for 200s through a heating coil. The heat produced is
  • A 4800 cal
  • B 6000 cal
  • C 2400J
  • D 240k cal
  • E 6000J
View Answer & Explanation
Question 37:
The electric supply from Kainji Dam is transmitted at high voltages of the order hundreds of kilovolts but is converted to domestic use of about 220 volts by
  • A Commutators
  • B Transistors
  • C Valves and diodes
  • D Rectifiers
  • E Transformers
View Answer & Explanation
Question 38:
Every house supplied with electricity is provided with a box of fuses so that
  • A The consumption of electricity can be recorded
  • B People residing in the house will not have an electric shock if they touch a live wire
  • C The total current drawn from the mains can be limited
  • D The voltage supply can be stabilized
  • E It serves as a standby supply when there is a power failure
View Answer & Explanation
Question 39:
An electric charge could be transmitted through
  • A Wood, rubber and stone
  • B Paper, clay and plastic
  • C Glass, acid and cloth
  • D The human body, water and metals
  • E All of the above
View Answer & Explanation
Question 40:
a guitar string is 75cm long. the wavelength of its fundamental note is
  • A 75cm
  • B 150cm
  • C 37.5cm
  • D 112cm
  • E 50cm
View Answer & Explanation