Magnets and Magnetic Fields - Jamb Physics Past Questions and Answers

Question 6:

• JAMB 1980

Which of the following radiations cannot be deflected by a magnetic field?

A. \(\alpha\)
B. \(\beta\)
C. \(\gamma\)
D. \(\beta\) and \(\gamma\)
E. None of them

Question 7:

• JAMB 1981

Which of the following elements are real magnetic materials?

A. Iron, steel and nickel
B. Copper, steel and iron
C. Lead, iron and brass
D. Glass, lead and steel
E. Stone, air and iron

Question 8:

• JAMB 1981

Alternating current can induce voltage because it has a

A. Ripple value
B. Varying magnetic field
C. Weaker magnetic field than direct current
D. Stonger magnetic field than direct current
E. High peak value

Question 9:

• JAMB 1982

A magnetic needle is suspended first at the earth's north magnetic pole and then at a point on the magnetic equator. The respective angles between the needle and the horizontal are

A. 0^o and 0^o
B. 60^o and 60^o
C. 90^o and 90^o
D. 90^o and 0^o
E. 0^o and 90^o

Question 10:

• JAMB 1983

In the Figure above, QR is a vertical conductor and the current I flows from R to Q, P is a point on the horizontal plane and is to the south of the wire. The direction of the magnetic field at P due to the current is

A. Upward
B. North
C. South
D. West
E. East