Jamb Physics 2010 Past Questions and Answers

Question 76:

• JAMB 2010

A cell of e.m.f 12V and internal resistance 4Ω is connected to an external resistor of resistance 2Ω. Find the current flow.

A. 5 A
B. 4 A
C. 3 A
D. 2 A

Question 77:

• JAMB 2010

The diagram above shows a balanced metre bridge, the value of x is

A. 75.0 cm
B. 66.7 cm
C. 33.3 cm
D. 25.0 cm

Question 78:

• JAMB 2010

Three 4Ω resistors connected in parallel have a potential difference of 16 V applied across them.

What is the total current in the circuit?

A. 14 A
B. 12 A
C. 10 A
D. 8 A

Question 79:

• JAMB 2010

In the diagram above, a 200 W bulb is lighted by a 240 V a.c mains supply. If 1kwh is sold at N40, the cost of keeping the bulb lighted for a day is

A. N1,920.00
B. N192.00
C. N19.20
D. N1.92

Question 80:

• JAMB 2010

In the diagram above, if the south-poles of two magnets strokes steel bar, the polarities at T and V will respectively be

A. South and north
B. North and south
C. North and north
D. South and south