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
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(a) |
L |
(b) |
L |
(c) |
L |
(d) |
L |
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 |