Waec Physics 2004 Past Questions and Answers

Question 41:

• WAEC 2004

The quantity of electric charge stored in a capacitor is measured in

A. Farad
B. Ampere
C. Coulomb
D. Volt

Question 42:

• WAEC 2004

Calculate the energy stored in a 20\(\mu F\) capacitor. If the p.d between the plates is 40V

A. 3.2 x 10^-2J
B. 1.6 x 10^-2J
C. 8.0 x 10^-4J
D. 4.0 x 10^-4J

Question 43:

• WAEC 2004

Given that the gravitational constant is G. Newton's universal law of gravitation states that the force of attraction between two masses M₁ and M₂ separation by a distance r is

A. \(Gr^2 M_1M_2\)
B. \(Gr M_1M_2\)
C. \(\frac{GM_1 M_2}{r^2}\)
D. \(\frac{GM_1 M_2}{r}\)

Question 44:

• WAEC 2004

A charge of 1.6 x 10^-10C is placed in a uniform electric field of intensity 2.0 x 10⁵ NC^-1. calculate the magnitude of the electric force exerted on the change

A. 3.2 x 10⁵N
B. 1.8 x 10⁵N
C. 3.2 x 10^-5N
D. 1.8 x 10^-5N

Question 45:

• WAEC 2004

Which of the following statements is not correct?

A. A magnetic field is a region in which a magnetic force will be detected
B. A magnetic line of force is a path along which a magnetic fields are scalar quantities it were free
C. Magnetic fields are scalar quantities
D. Neutral point are obtained where the earth's magnetic force is exactly equal and opposite to that due to a magnet