Electrostatics - Jamb Physics Past Questions and Answers

Question 31:

• JAMB 2001

Which of the following metals will provide the greatest shield against ionizing radiation

A. Iron
B. Manganese
C. Alminium
D. Lead

Question 32:

• JAMB 2001

The magnetic force on a charged particle moving with velocity v is

A. Proportional to both the magnitude of the charge and the velocity v
B. Independent of the magnitude of the charge
C. Proportional to the velocity v only
D. Proportional to the magnitude of the charge only

Question 33:

• JAMB 2001

The diagram above shows a closed side 0.5m in a uniform electric field E in the direction shown by the arrows. What is the flux Φ for the box?

A. 0.5 E
B. 2.0 E
C. 0.2 E
D. 0.0 E

Question 34:

• JAMB 2002

The electric field between two - point charges is shown in the diagram above. What types of charges are at X and Y?

A. Both X and Y are negative
B. Both X and Y are positive
C. X is positive and Y is negative
D. X is negative and Y is positive

Question 35:

• JAMB 2002

A current of 0.5 A flowing 3h Deposits 2g of metal during electrolysis. The quantity of the same metal that would be deposited by the currents of 1.5A flowing in 1h is

A. 2g
B. 6g
C. 10g
D. 18g