Physics WAEC

A chemical cell of internal resistance 1Ω supplies electric current to an external resistor of resistance 3Ω. Calculate the efficiency of the cell.

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

Correct Answer: Option A

A. 75%

Explanation

R = r1+ R = 1+3 = 4Ω

¾×100 = 75%

AddThis Website Tools
Sunday

Share
Published by
Sunday
Tags: physics
5 years ago

Recent Posts

POL 101 Theory Questions: Health TeamPOL 101 Theory Questions: Health Team

POL 101 Theory Questions: Health Team

100 Level Department Of X-Ray Technicians exam questions and detailed answers. Download the answers in…

1 day ago
POL 101 Theory Questions: Factors Affecting Health in NigeriaPOL 101 Theory Questions: Factors Affecting Health in Nigeria

POL 101 Theory Questions: Factors Affecting Health in Nigeria

100 Level Department Of X-Ray Technicians exam questions and detailed answers. Download the answers in…

2 days ago
POL 101 Theory Questions: Primary Health Care PrinciplesPOL 101 Theory Questions: Primary Health Care Principles

POL 101 Theory Questions: Primary Health Care Principles

100 Level Department Of X-Ray Technicians exam questions and detailed answers. Download the answers in…

2 days ago

POL 101 Theory Questions: Nigeria Healthcare Tiers

100 Level Department Of X-Ray Technicians exam questions and detailed answers. Download the answers in…

2 days ago

PHC 101 Theory Questions: Primary Health Care – Health According To WHO – Referral System

100 Level Department Of X-Ray Technicians exam questions and detailed answers. Download the answers in…

2 days ago

MSX 102 Theory Questions: Mores – Folk Laws – Social Stratification – Social Changes

100 Level Department Of X-Ray Technicians exam questions and detailed answers. Download the answers in…

2 days ago