Efficiency Of A Cell - Physics Jamb Past Questions and Answers

Question 1 :

• JAMB 2019

If the time of flight is 96seconds, calculate the horizontal range through the point of projection.

A. 84400m
B. 69000m
C. 61440m
D. 24000m

Question 2 :

• JAMB 2012

A cell of internal resistance 1Ω supplies current to an external resistor of 3Ω. The efficiency of the cell is

A. 25%
B. 33%
C. 50%
D. 75%

Question 3 :

• 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%