Jamb Physics 2011 Past Questions and Answers

Question 31:

• JAMB 2011

In measuring high frequency a.c, the instrument used is the

A. D.c ammeter
B. Moving coil ammeter
C. Moving iron ammeter
D. Hot wire ammeter

Question 32:

• JAMB 2011

If the charge of electricity is K wh is N4, what is the cost of operating an electrical appliance rated 250 v,2 A for six hours?

A. N28
B. N12
C. N16
D. N24

Question 33:

• JAMB 2011

Under which of the following conditions do gases conduct electricity?

A. Low presssure and low p.d
B. Low pressure and high p.d
C. High pressure an low p.d
D. High pressure and high p.d

Question 34:

• JAMB 2011

Two inductors of inductance 4 II and 8 II are arrange in series and a current of 10 A is passed through them. What is the energy stored in them?

A. 600 J
B. 50 J
C. 133 J
D. 250 J

Question 35:

• JAMB 2011

Which of the following materials has an increase in resistance with temperature?

A. Water
B. Metals
C. Wood
D. Electrolyte