A) \[{{10}^{-3}}V{{m}^{-1}}\]
B) \[{{10}^{-5}}V{{m}^{-2}}\]
C) \[2\times {{10}^{-3}}V{{m}^{-1}}\]
D) \[4\times {{10}^{-3}}V{{m}^{-1}}\]
Correct Answer: A
Solution :
(a) \[{{10}^{-3}}V{{m}^{-1}}\] Given, \[l=1.0\,mA={{10}^{-3}}\,A;R=4\,\Omega ;\,L=4\,m\] Potential drop across potentiometer wire, \[V=lR={{10}^{-3}}\times 4\,V\] Potential gradient, \[k=\frac{V}{L}=\frac{4\times {{10}^{-3}}}{4}={{10}^{-3}}V{{m}^{-1}}\]
You need to login to perform this action.
You will be redirected in
3 sec
