In a meter bridge experiment, the balance point is obtained at length ₁ ~cm from left end when resistances in the left gap and right gap are 5 and R respectively. When the resistance R is shunted with equal resistance, the new balance point

Question

In a meter bridge experiment, the balance point is obtained at length ₁ ~cm from left end when resistances in the left gap and right gap are 5 and R respectively. When the resistance R is shunted with equal resistance, the new balance point is at 1.6 ₁ . The resistance R in ohm is

Quantrex Academy · Accepted Answer

Correct answer: B. 15

5 R = ₁ 100- ₁ When R is shunted, aligned & 5 2 R = 1.6 ₁ 100-1.6 ₁ & 5 R = 0.8 ₁ 100-1.6 ₁ aligned Equating (1) and (2) and solving we get ₁=25 ~cm Putting this in Eq. (1), we get R=15

In a meter bridge experiment, the balance point is obtained at length ₁ ~cm from left end when resistances in the left gap and right gap are 5 and R respectively. When the resistance R is shunted with equal resistance, the new balance point is at 1.6 ₁ . The resistance R in ohm is

Options

Correct answer

Step-by-step solution

More from Current Electricity