Electrostatics - Jamb Physics Past Questions and Answers

Question 6:

• JAMB 1980

Which of the following is true of an electrical charge?

A. Positive charge means deficit electrons
B. Negative charge means excess of electrons
C. Electric current means movement of electrons
D. All of the above
E. A and B only

Question 7:

• JAMB 1981

Which of the following statements is CORRECT?

A. Charges generated on glass rubbed with silk are called negative
B. Charges in various media can be carried by protons detached from their atom
C. The magnitude of any charge is a multiple of the charge of an electron
D. The intensity of an electric field is a scalar quantity
E. If 500 joules of work are required to move a 2-coulomb charge between two points, the potential difference between the two point is 100V

Question 8:

• JAMB 1982

As a positively charge rod is brought nearer to the top cap of a positively charged gold leaf electroscope, the divergence of the leaves will

A. Decrease to zero
B. Steadily increase
C. Decrease to zero and then increase
D. Remain constant
E. Increase to a maximum and then decrease

Question 9:

• JAMB 1983

If the force of a charge of 0.2 coulomb in an electric field is 4N, then the electric field intensity of the field is

A. 0.8
B. 0.8N/C
C. 20.0N/C
D. 4.2N/C
E. 20.0N/C

Question 10:

• JAMB 1984

A body of mass 5kg initially at rest is acted upon by two mutually perpendicular forces 12N and 5N as shown in fig.3. If the particle moves in the direction QA, calculate the magnitude of the acceleration

A. 0.40ms^-2
B. 1.40ms^-2
C. 0.26ms^-2
D. 2.60ms^-2
E. 3.40ms^-2