Electrostatics - Jamb Physics Past Questions and Answers

Question 46:

• JAMB 2007

two long parallel wires X and Y carry currents 3A and 5A each. if the force experienced by unit length is 5 x 10^-5N. the force per unit length experienced by wire Y is

A. 3 x 10^-5
B. 3 x 10^-6
C. 5 x 10⁵
D. 5 x 10^-5

Question 47:

• JAMB 2009

If negative charges are induced on an electroscope and a positively charged rod is brought near the cap of the electroscope, the leaves will

A. Close up
B. Become positively charged
C. Become negatively charged
D. Open further

Question 48:

• JAMB 2009

Which of the following can conduct electricity owing to the presence of free mobile electrons?

A. Germanium
B. Silicon
C. Grapefruit
D. Copper

Question 49:

• JAMB 2010

When a positively charged rod is brought nearer the cap of a positively charged electroscope, the leaves divergence will

A. Be induced
B. Converge
C. Diverge
D. Remain constant

Question 50:

• JAMB 2010

When a positively charged rod is brought nearer the cap of a positively charged electroscope, the leaves divergence will

A. Be induced
B. Converge
C. Diverge
D. Remain constant