Electric Cells - Jamb Physics Past Questions and Answers

Question 21:

• JAMB 2015

Which of the following instrument is most accurately for comparing electromotive force (e.m.f) of two cells?

A. Voltmeter
B. Meter rule
C. Galvanometer
D. Potentiometer

Question 22:

• JAMB 2017

A cell of internal resistance 2 π supplies current to a 6 π resistor. The efficiency of the cell is

A. 12.0%
B. 25.0%
C. 33.3%
D. 75.0%

Question 23:

• JAMB 2017

Which of the following is correct about an electric cell?

A. Primary cell produces a large current for a long time
B. Secondary cell has a very high internal resistance
C. Primary cell has a very low internal resistance
D. Secondary cell has a very low internal resistance

Question 24:

• JAMB 2018

Which of the following has the lowest internal resistance when new?

A. Leclanche cell
B. Daniell cell
C. Torch battery
D. Accumulator

Question 25:

• JAMB 2019

The lead-acid accumulator consists of

A. Lead as the positive electrode
B. Lead acid as the negative electrode
C. Hydrochloric acid as the electrolyte
D. Tetraoxosulphate (vi) acid as the electrolyte