passwella.
Menu

JAMB Physics 2005 Question 24

Question 24

Magnetism

Two charged particles are projected into a region where there is a magnetic field perpendicular to their velocities. If the charges are deflected in opposite directions, which of the following statements is true of the charges?

  1. A.The charges are of the same sign
  2. B.Positive charges are more in number
  3. C.The charges must be of opposite sign
  4. D.The charges are electrically neutral.
Show the answer and explanation

Answer: C (The charges must be of opposite sign)

Explanation

The magnetic force direction depends on the sign of the charge; opposite deflections in the same field mean opposite charges.