Physics
JAMB 2000
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%
Correct Answer: Option D
Explanation
Efficiency = Output/input x 100/1
Efficiency = 3/(3+1) x 100/1
= 3/4 x 100/1 = 75%
Report an Error
Ask A Question
Download App
Quick Questions
Contributions ({{ comment_count }})
Please wait...
Modal title
Report
Block User
{{ feedback_modal_data.title }}