Current Electricity - Jamb Physics Past Questions and Answers

Question 106:

• JAMB 2009

From the diagram above, if the potential difference across the resistor, capacitor and inductor are 80 v, 110 v, 40 v respectively, the effective potential difference is

A. 116.3 V
B. 50.0 V
C. 230.0 V
D. 106.3 V

Question 107:

• 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 108:

• 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 109:

• 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 110:

• JAMB 2011

Three similar cells each of e.m.f 2 v and internal resistance 2Ω are connected in parallel, the total e.m.f and total internal resistance are respectively

A. 6 v, 6.0Ω
B. 2 v, 0.7Ω
C. 2 v, 6.0Ω
D. 6 v, 0.7Ω