A) 1.0 V
B) 1.5V
C) 2.0V
D) 2.5V
Correct Answer: B
Solution :
EMF of the cell is given by \[E=I(R+r)\] For \[2\Omega \] resistance \[E=0.5(2+r)\] ... (i) For \[5\Omega \] resistance \[E=0.25(5+r)\] ... (ii) Solving these two equations, we get \[r=1\Omega \] Now, from Eq. (i), we get \[E=1.5V\]You need to login to perform this action.
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