Jamb Physics 2004 Past Questions and Answers

Question 21:

• JAMB 2004

To protect a material from the influnce of an external magnetic field, the materials should be kept

A. Square steel ring
B. Triangular zinc ring
C. Soft iron ring
D. Loop of copper wire

Question 22:

• JAMB 2004

In the diagram above, the ratio of he electric power dissipated in the 6Ω and the 3Ω resistor respectively is

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

Question 23:

• JAMB 2004

If the angle between two vector P and Q is O^o, the vectors are said to

A. Intersect at the angle 45^o
B. Intersect at the angle 60^o
C. Be parallel
D. Be perpendicular

Question 24:

• JAMB 2004

A body of mass 4kg is acted on by a constant force of 12N for 3 seconds. The kinetic energy gained by the body at the end of the time is

A. 144J
B. 162J
C. 81J
D. 72J

Question 25:

• JAMB 2004

A machine whose efficiency is 60% has a velocity ratio of 5. If a force of 500N is applied to lift a load P, what is the magnitude of P?

A. 1500N
B. 500N
C. 4166N
D. 750N