Waec Physics 1995 Past Questions and Answers

Question 41:

• WAEC 1995

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 42:

• WAEC 1995

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 43:

• WAEC 1995

A capacitor of capacitance 25μF is connected to an a.c. power source of frequency 200 Hz. Calculate the reactance of the capacitor

A. 0.01
B. 0.02
C. 50.00
D. 100.00
E. 200.00.

Question 44:

• WAEC 1995

The energy stored in a capacitor of capacitance 5μF is 40J. Calculate the voltage applied across its terminals?

A. 4000V
B. 200V
C. 16V
D. 6V
E. 4V

Question 45:

• WAEC 1995

The effective capacitance between points X and Y in the diagram below is 1.0μF, What is the value of the capacitance C, measured in micro-farad?

A. 5.0μF
B. 4.0μF
C. 3.0μF
D. 1.0μF
E. 0.5μF