Define the resistivity of a metal wire

ρ = (AR) / l

where:

ρ is the resistivity of the metal wire

A is the cross sectional area of the specimen wire

R is the electrical resistance of  a uniform metal wire

l is the length of metal wire through which electricity is passed

JE
Answered by Javier E. Physics tutor

3310 Views

See similar Physics A Level tutors

Related Physics A Level answers

All answers ▸

A metal detector consists of a battery providing an alternating current to a transmitter coil and a receiver coil connected to a loudspeaker. Using Faraday's Law of Induction explain how a metal detector works. (5 marks)


A fluorescent light uses a lining to emit visible light, explain why this is necessary and how it works.


What is the Young's modulus of a material?


Describe and explain the first stages of the life cycle of a star before it reaches the main sequence.


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2025 by IXL Learning