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

Answered by Heather W. Physics tutor

1866 Views

See similar Physics A Level tutors

Related Physics A Level answers

All answers ▸

In the Rutherford alpha scattering experiment, most particles passed straight through the foil with little or no deflection. What can be deduced about the structure of the atom from this?


A car of mass 800 kg is accelerated horizontally by constant net force of 1920 N for 9 s. It then breaks for 2 s, but drives off a 5 m high cliff. If μ = 0.85, what is the total horizontal distance travelled by car and its velocity? Ignore air resistance.


Explain how a bright line is formed by the diffraction grating at the first order diffraction angle


Describe, using words, an equation, *and* a graph for each, the following gas laws: (i) Boyle's Law (ii) Charles' Law (iii) The Pressure Law


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo
Cookie Preferences