Jamb Physics 2011 Past Questions and Answers

Question 46:

• JAMB 2011

In the circuit above, three resistors, 2Ω, 4Ω and 12Ω are connected in parallel and a 12V battery is connected across the combination. The current flowing through the 12Ω resistors is

A. 14.4 A
B. 1.0 A
C. 3.2 A
D. 9.6 A

Question 47:

• JAMB 2011

If the volume of a gas increases steadily as the temperature decreases at constant pressure, the gas obeys

A. Graham's Law
B. Boyle's Law
C. Pressure law
D. Charles Law
E. No Correct Option

Question 48:

• JAMB 2011

In Homes, electrical appliances and lamps are connected in parallel because

A. Parallel connections do not heat up the wires
B. Series connections use high voltage
C. Less current will be used
D. Less voltage will be used

Question 49:

• JAMB 2011

In an A.C circuit, the ratio of r.m.s value to peak value of current is

A. 2
B. \( \frac{1}{2} \)
C. \( \frac{1}{\sqrt{2}} \)
D. \( \sqrt{2} \)