Question

A battery of emf 2V is connected across a long uniform wire AB on length 1m and resistance per unit length $2\Omega m^{-1}$. Two cells of emf ${\epsilon }_1=1V$ and ${\epsilon }_2=2V$ are connected as shown in the figure. If the galvanometer shows no deflection at point P, the distance of point P from point A is equal to:

• A. 0
• B. 50 cm
• C. 100 cm
• D. 25 cm

Answer 1

The correct option is C 100 cm

$Emf=2V$

Length$=2\Omega /m$

Two cells of ef

${ϵ}_1=1V{ϵ}_2=2V$

$1m=100cm$