Waec Physics Past Questions For Year 1995
Question 36
The period of a wave is 0.02 second. Calculate its wavelength if its speed is 330 ms-1
- A. 6.6m
- B. 5.0m
- C. 4.0m
- D. 3.3m
- E. 2.0m
Question 37
If the current in the resistor R in diagram above is 0.05A, calculate the p.d. across the inductor.
- A. 2.5V
- B. 25.0V
- C. 49.0V
- D. 50.0V
- E. 250.0V
Question 38
Calculate the inductive reactance of the circuit shown above.
- A. 50.00
- B. 5.00
- C. 0.50
- D. 0.05
- E. 0.02
Question 39
Calculate the electric potential at a distance of 20.0cm from a point charge of 0.015C placed in air of permittivity (Take 1/4πεo as 9.0 x 109 Nm2C2)
- A. 3.40x106V
- B. 6.75x105V
- C. 6.75x1012V
- D. 3.40x105V
- E. 8.30 x 102V
Question 40
Calculate the inductance L of the coil in the circuit shown below.
- A. 14.4H
- B. 3.8H
- C. 0.6H
- D. 0.4H
- E. 0.2H
