An electric cell has an internal resistance of 2 ohms. A current of 0.5A is...

JAMB 1979

An electric cell has an internal resistance of 2 ohms. A current of 0.5A is found to flow when a resistor of 5 ohms resistance is connected across it. What is the electromotive force of the cell?

A. 5 volts
B. 3.5 volts
C. 2.5 volts
D. 1 volts
E. 10 volts

NECO June/July 2024 - Get offline past questions & answers - Download objective & theory, all in one app 48789

Project Topics and Materials, Post-UTME past questions - Download now or upload yours to get paid

Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts

Correct Answer: Option B

Explanation

E.m.f. = I(R + r) = 0.5(2+5) = 3.5 volts

Previous Next

Go back to Phy classroom

Report an Error Ask A Question Download App

Contributions ({{ comment_count }})

Please wait...

{{ settings.no_comment_msg ? settings.no_comment_msg : 'There are no comments' }}

Quick Questions

a truck of mass 20kg moving at a speed of 8m/s, collides with another truck of mass 30kg moving in... Answer this

0 Answers · 2 hours ago
Passing a thread in and out of a fabric in order to make specific design? Answer this

1 Answers · 13 hours ago
the leader and the lesson by niyi osun dare is about leadership in Africa.discuss? Answer this

1 Answers · Literature in English · 14 hours ago

An electric cell has an internal resistance of 2 ohms. A current of 0.5A is...

Correct Answer: Option B

Explanation

Contributions ({{ comment_count }})

Please wait...

Modal title

Report

Block User

{{ feedback_modal_data.title }}

Quick Questions

Post your Contribution

Sign In