Magnets and Magnetic Fields - Jamb Physics Past Questions and Answers

Question 16:

• JAMB 1986

Which of the following is most strongly deflected by magnetic field?

A. \(\gamma\) - rays
B. X- particle
C. \(\beta\) - particles
D. X - rays

Question 17:

• JAMB 1987

If the angle of declination in a place is 10oE, calculate the true geographic bearing if the compass reads N40oE

A. N50^oE
B. N40^oE
C. N30^oE
D. N25^oE

Question 18:

• JAMB 1987

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

Question 19:

• JAMB 1988

The wire X in the figure above is at right angles to the plane of the paper and carries a current into the paper. at which of the points labelled 1-4, will the magnetic flux density due to this current be in the same direction as that of the horizontal component of earth's magnetic field

A. 1
B. 2
C. 3
D. 4

Question 20:

• JAMB 1989

Two insulated charged spheres of different sizes and carrying opposite charges are connected together by a metallic conductor. Current will flow from one sphere to the other until both sphere

A. Carry the same magnitude and sign of charge
B. Are at the same potential
C. Are at the same temperature
D. Are of the same size