Question

principal of poteintiometer?​

Answer 1

answer.

the principal of potentiometer is that the potential dropped across a segment of a wire of uniform crossection carrying a constant current is directly proportional to its length. the potentiometer is a simple device is used measure the electronic potential.

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Answer 2

Answer:

when a current flow through a wire of uniform area of crossection the the potential difference across any portion of the wire is directly pro. to the lenght of that portion.

Explanation:

According to ohm law

V=IR

But, R= rho L/A

V = I rho L/A

if I and A are Constant

then

I rho/ A = K

Therefore, V=Kl

• Or V is directly pro. L