Physics WAEC

A wire of cross-sectional area 0.60mm2 has a resistivity of 7.2 x 10-7 Ω. Calculate the length of wire that will have a resistance of 3Ω.

A. 0.25m
B. 2.50m
C. 3.60m
D. 36.00

Correct Answer: Option B

B. 2.50m

Explanation

R = P/LA

C = R/AP

C = 0.60×10−6×3/7.2×10−7

C = 2.50m

Sunday

Share
Published by
Sunday
Tags: physics

Recent Posts

List of Universities Offering Veterinary Medicine in Nigeria

Veterinary medicine is the branch of medicine that deals with the prevention, diagnosis, and treatment…

4 months ago

List of Universities Offering Anthropology in Nigeria

Anthropology is the scientific study of human beings and their cultures. It encompasses a wide…

4 months ago

List of Universities Offering Sociology in Nigeria

Sociology is the scientific study of human society, culture, and behavior. It examines the social…

4 months ago

List of Universities Offering Social Work in Nigeria

Social Work is a profession dedicated to helping individuals, families, and communities to cope with…

4 months ago

List of Universities Offering Religious Studies in Nigeria

Religious studies is an academic discipline that explores the beliefs, practices, and history of various…

4 months ago

List of Universities Offering Public Administration in Nigeria

Public administration is the field of study and practice that focuses on the organization and…

4 months ago