Question

In a potentiometer of 5 wires, the balance point is obtained on the 2^nd wire. To shift the balance point to the 4^th, we should decrease the current of the main circuit.

(a) True

(b) False

The question was posed to me during an online exam.

My doubt stems from Current Electricity in division Current Electricity of Physics – Class 12

Answer 1

The correct answer is (a) True

Easy explanation: If we have to shift the balance point of a potentiometer to a higher length, the potential gradient of the wire is to be decreased. This can also be achieved by increasing the resistance in series with the potentiometer wire, and this is possible by decreasing the current of the main circuit. So, this is a true statement.