I'm gonna make him an offer he can't resist(ance)

Electricity and Magnetism Level 3

A conductor of length \(l\) has a uniform cross section.

The radius of cross section varies linearly from \(a\) to \(b\).The resistivity of the material is \(\rho\).

Find the resistance of the conductor across its ends in Ohms.

Details and Assumptions

  • \(\rho\)=\(6.28\times\)\(10^{-8}\)\(\Omega\)m
  • \(l\) (length of conductor) =10 cm
  • \(a\)=2 cm and \(b\)=5 cm

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