SaraNextGen Study App [2022-23]
Last Updated On 23-10-2022 - By Sara

Potentiometer wire AB having length L and resistance 12 r is jointed to a cell D of emf  and internal resistance r, A cell C having emfε/2 and internal resistance 3r is connected. The length AJ at which the galvanometer as shown in fig. shows no deflection is

             

(a)

L

(b)

L

(c)

L

(d)

L


Question ID - 50237 :-

Potentiometer wire AB having length L and resistance 12 r is jointed to a cell D of emf  and internal resistance r, A cell C having emfε/2 and internal resistance 3r is connected. The length AJ at which the galvanometer as shown in fig. shows no deflection is

             

(a)

L

(b)

L

(c)

L

(d)

L

1 Answer
5876 Votes
3537

Answer Key : (d) -

i=

i =

=  

⇒  x=



Next Question :

An insulting thin rod of length has a x linear charge density p(x)=  on it. The rod is rotated about an axis passing through the origin (x=0) and the perpendicular to the rod. If the rod makes n rotations per second, then the time averaged magnetic moment of the rod is :

(a)

(b)

 

(c)

 

(d)

 


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