Search SchoolNGR

Wednesday, 20 May 2026
Register . Login

Physics Past Questions and Answers

Jamb 1987 Physics Questions

Question 36:
A current of 0.5A flows through a resistor when connected to a 40-V battery. How much energy is dissipated in 2 minutes?
  • A 1200J
  • B 1500J
  • C 2400J
  • D 96000J
View Answer & Explanation
Question 37:
The direction of the magnetic field at a point in the vicinity of a bar magnet is
  • A Always towards the north pole of the magnet
  • B Always away from the south pole of the magnet
  • C Along the line joining the point to the neutral point
  • D In the direction the north pole of a compass needle would point
View Answer & Explanation
Question 38:
When two parallel wires carry currents in opposite directions, the force on either wire is
  • A Away from the other wire
  • B Zero, because the currents cancel each other
  • C Twice as much as when the currents are in the same direction
  • D Towards the other wire
View Answer & Explanation
Question 39:
A galvanometer of resistance 20\(\Omega\) is to be provided with a shunt that \(\frac{1}{10}\) of the whole current in a circuit passes through the galvanometer. The resistance of the shunt is
  • A 2.00\(\Omega\)
  • B 2.22\(\Omega\)
  • C 18.00\(\Omega\)
  • D 18.22\(\Omega\)
View Answer & Explanation
Question 40:
What type of reaction is represented by the following scheme? \( ^2 _1X \) + \( ^{2} _{1}Y \) + \( ^{3} _{2}Z \) + \( ^{1} _{0}n \) + energy
  • A Fusion reaction
  • B Fission reaction
  • C Chain reaction
  • D Radioactive decay
View Answer & Explanation