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What is potential gradient ?...

What is potential gradient ?

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What is the unit of potential gradient ?

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Potentiometer wire length is 10m, having a total resistance of 10Omega , if a battery of emf 2 volt negligible internal resistance and a rheostat is connected to it then potential gradient is 20mV/m find the resistance applied through rheostat:-

A potentiometer wire has length 4 m and resistance 8 Omega . The resistance that must be connected in series with the wire and an accumulator of e.m.f. 2V, so as to get a potential gradient 1 mV per cm on the wire is :

Define potential gradient and write its unit.

Resistivity of the mateial of potentiometer wire is (rho) and area of its uniform cross section is A, Hence potential gradient on the wire is = ..... .

If specific resistance of a potentiometer wire is 10^(–7 ) Omega m , the current flow through it is 0.1 A and the cross-sectional area of wire is 10^(–6) m^(2) then potential gradient will be