Question

What should be the value of R in the figure (32-E16) for which the current in it is zero?
figure 32-E16

Answer 1

Answer:

For an value of R, the current in the branch is 0.

Answer 2

Any value of R in the figure for which the current is zero is acceptable.

Explanation:

There should be a balance in the middle branch of circuit for the current to be zero. As per the Wheatstone bridge principle, there is no dependence on the resistance R’s circuit value in the middle branch. In this case, there is a balance in the circuit. Therefore, any value of R is accepted.