Electrostatics - Jamb Physics Past Questions and Answers

Question 41:

• JAMB 2005

If the distance between two point charges its increased by a factor of four, the magnitude of the electrostatic force between them will be

A. ¹/₄ of its former value
B. ¹/₁₆ of its former value
C. ¹/₂ of its former value
D. 4 times its former value

Question 42:

• JAMB 2006

The production and type of charge of a body can only be accounted for by the?

A. Deficiency or surplus of electrons
B. Equibrium in protons and neutrons
C. Deficiency or surplus of protrons
D. Deficiency or surplus of neutrons

Question 43:

• JAMB 2006

If two charged plates are maintained at a potential difference of 3 kv, the work done in taking a charge of 600 µC across the field is?

A. 0.8 J
B. 1.8 J
C. 9.0 J
D. 18.0 J

Question 44:

• JAMB 2007

A charge 50 µc has electric field strength of 360 NC-1 at a certain point. The electric field strength due to another charge 120 µc kept at the same distance apart and in the same medium is?

A. 864 NC^-1
B. 150 NC^-1
C. 144 NC^-1
D. 18 NC^-1

Question 45:

• JAMB 2007

If two charged plates are maintained at a potential difference of 3 kv, the work done in taking a charge of 600µc across the field is

A. 0.8j
B. 1.8j
C. 9.0j
D. 18.0j