Waec Physics 2002 Past Questions and Answers

Question 36:

• WAEC 2002

Which of the following items can be used to compare the relative magnitudes of electric charges on two bodies?

A. Ebonite rod
B. Gold leaf electroscope
C. Proof plane
D. The electrophorus

Question 37:

• WAEC 2002

Three capacitors each of capacitance 18\(\mu F\) are connected in series. Calculate the effective capacitance of the capacitors

A. 54.00\(\mu F\)
B. 18.00\(\mu F\)
C. 6.00\(\mu F\)
D. 0.17\(\mu F\)

Question 38:

• WAEC 2002

Two spheres of masses 100kg and 90kg respectively have their centres separated by a distance of 1.0m. Calculate the magnitude of the force of attraction between them. [G = 6.70 x 10^-11Nm^-2kg^-2]

A. 6.70 x 10^-11N
B. 6.70 x 10^-10N
C. 6.03 x 10^-11N
D. 6.03 x 10^-7N

Question 39:

• WAEC 2002

The magnitude of the gravitational attraction between the earth and a particle is 40N. If the mass of the particle is 4kg. Calculate the magnitude of the gravitational field intensity of the earth on the particle

A. 10.0N kg^-1
B. 12.6N kg^-1
C. 25.0N kg^-1
D. 160.0N kg^-1

Question 40:

• WAEC 2002

Local actions is normally prevented in a simple electric cell by

A. Introducing an oxidizing agent in the acid
B. Not drawing current continously for long period
C. Amalgamating the surface of the zinc plate
D. Using a porous pot to isolate the zinc plate from the acid