Physics Past Questions and Answers

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

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

Question 527:

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

A 65 Î©
B 18 Ω
C 16 Î©
D 14 Î©
E 12 Î©

Question 528:

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

Question 529:

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

A Water
B Alcohol
C Petrol
D Palm oil
E Kerosine

Question 530:

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.