Sujit Kumar
Last Activity: 7 Years ago
Sorry.... The above answer is wrong... Please refer this one
E = e.m.f of cell
r = internal resistance
Current in circuit 1 and 2 is
&
respectively
CIRCUIT 1:
__________(1)
__________(2)
CIRCUIT 2:
__________(3)
__________(4)
From equation (1) & (3) we get
__________(5)
From equation (2) & (4) we get
__________(6)
From equation (5)
Substituting equation (6)
Symplifying and sending underroot R1 to the top and canceling (underroot R2 – underroot R1) in numerator and denominator we finally get