Current Electricity - Jamb Physics Past Questions and Answers

Question 116:

• JAMB 2012

A cell can supply current of 0.4 A and 0.2 A through a 4.0Ω and 10.0Ω resistors respectively.
This internal resistance of the cell is

A. 2.0Ω
B. 1.0Ω
C. 2.5Ω
D. 1.5Ω

Question 117:

• JAMB 2013

A cell of emf 1.5V is connected in series with a 1Ω resistor and a current of 0.3A flows through the resistor. Find the internal resistance of the cell

A. 4.0Ω
B. 3.0Ω
C. 1.5Ω
D. 1.0Ω

Question 118:

• JAMB 2013

Which of the following obeys ohms laws?

A. Electroytes
B. Metals
C. Diode
D. Glass

Question 119:

• JAMB 2013

An electric device is rated 2000W, 250V. Calculate the maximum current it can take

A. 9A
B. 8A
C. 7A
D. 6A

Question 120:

• JAMB 2014

The maximum power transfer occur in a cell when the external resistance is

A. Twice the internal resistance of the cell
B. The same as the internal resistance of the cell
C. Greater than the internal resistance of the cell
D. Less than the internal resistance of the cell