Calculate the resistance of a uniform wire of diameter 0.5mm, length 2m and resistivity 1.7x10^-8Ωm.

R=ρ L/AR= (1.7*10^-8 2)/(0.0005^2π/4)R=0.173Ω

HW
Answered by Heather W. Physics tutor

2567 Views

See similar Physics A Level tutors

Related Physics A Level answers

All answers ▸

What is the stress in a cylindrical rod of 10.0cm diameter when loaded by 50.0N force at each end?


A capacitor discharge circuit of time constant 45ms includes a capacitor and resistor. The capacitor has a capacitance of 18µF What is the resistance of the resistor?


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)


Describe how the strong nuclear force between two nucleons varies with the separation of the nucleons, quoting suitable values for separation.


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:

© 2026 by IXL Learning