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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > Figure shwos a conductor of length l having a circular cross section . The radius of cross section varies linearly from a to b . The resistivity of the material is rho. Assuming that b-a << l . find the resistance of the conductor.

Figure shwos a conductor of length l having a circular cross section . The radius of cross section varies linearly from a to b . The resistivity of the material is rho. Assuming that b-a << l . find the resistance of the conductor.

How many electrons per second pass through a section of wire carrying a current of 0.7 A?