Physics Past Questions

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966

ln the diagram above, the resistor has a resistance 8 Ω while the reactances of the inductor and the capacitor are 10 Ω and 16 Ω respectively Calculate the current in the circuit

A. 3.6A
B. 3.8A
C. 9.2A
D. 10.0A
E. 13.0A

View Answer & Discuss (2) WAEC 1996

967

The resistance in a series R-C circuit is 5 Ω. If the impedance of the circuit is 13 Ω, calculate the reactance of the capacitor

A. 65 Ω
B. 18 Ω
C. 16 Ω
D. 14 Ω
E. 12 Ω

View Answer & Discuss (3) WAEC 1996

968

What is the decay constant of a radioactive element whose half-life is 3 seconds

A. 0.132s^-1
B. 0.23s^-1
C. 0.347s^-1
D. 0.693s^-1
E. 0.924s^-1

View Answer & Discuss (5) WAEC 1996

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969

Which of the following substances is most viscous at room temperature?

A. Water
B. Alcohol
C. Petrol
D. Palm oil
E. Kerosine

View Answer & Discuss (1) WAEC 1996

970

Which of the following is not part of the electromagnetic spectrum?

A. Radio wave
B. Gamma ray
C. Infra-red ray
D. Alpha particle
E. X-ray.

View Answer & Discuss WAEC 1996

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