Question

On what factor does potential gradient of potentiometer wire depends

Answer 1

 [email protected]

 

Login

 

Ask Questions, Get Answers

 

Questions  >>  CBSE XII  >>  Physics  >>  Current Electricity



Next similar question

Q)

 

What are the factor does the potential gradient of the potentiometer wire depend ?



A)

 

Need homework help? Click here.

Solution :

The fall of potential across a potentiometer wire of length l is given by

V=IRV=IR

=IρlA=IρlA

Potential gradient k=vl=IρAk=vl=IρA

=k∞I=>=k∞I=> current passing through the potentio meter wire.

(ii) k∞ρk∞ρ (ie) specific resistance of the material of the potentiometer wire.

(iii) k∞1Ak∞1A

(ie) area of cross section of the wire
hope it helps
plZ mark it as brainlist