Question

In a meter bridge experiment, the ratio of the left gap resistance to right gap resistance is 2 : 3, the balance point from left is –

• A. 60 cm
• B. 50 cm
• C. 40 cm
• D. 20 cm

Answer 1

Answer: (C)

40 cm

Answer 2

= $\frac { \ell } { 100 - \ell }$ ⇒ $\frac { 2 } { 3 }$= $\frac { \ell } { 100 - \ell }$l = 40 cm