Jamb Physics 2010 Past Questions and Answers

Question 61:

• JAMB 2010

When a positively charged rod is brought nearer the cap of a positively charged electroscope, the leaves divergence will

A. Be induced
B. Converge
C. Diverge
D. Remain constant

Question 62:

• JAMB 2010

Power supply is transmitted at a very high voltage and low current in order to

A. Make pass through the trasformers
B. Increase the power supply
C. Make it travel fast
D. Prevent overheating of the coil

Question 63:

• JAMB 2010

A galvanometer with full-scale deflection of 10 mA is to be converted to a voltmeter with full-scale deflection of 5v. the resistance of the galvanometer is

A. 1Ω
B. 2Ω
C. 5Ω
D. 10Ω

Question 64:

• JAMB 2010

Two inductors of inductances 5 mll and 15 mll are connected in series and a current of 5A flows through them. the total energy stored in the inductor is

A. 500.0J
B. 250.0J
C. 62.5J
D. 50.0J
E. No correct option

Question 65:

• JAMB 2010

In alternating current circuit at resonance, the angel of lead or lag is

A. π°
B. (π)/2°
C. (π)/3°
D. 0°