Explore topic-wise MCQs in Physics Questions and Answers.

This section includes 2 Mcqs, each offering curated multiple-choice questions to sharpen your Physics Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.

1.	A potentiometer has uniform potential gradient. The specific resistance of the material of the potentiometer wire is 10-9Ωm and the current passing through it is 0.5A and the cross sectional area of the wire is 10-8m2. Calculate the potential gradient along the potentiometer wire.
A.	0.5 × 10-9 V/m
B.	0.5 × 10-8 V/m
C.	0.5 × 10-1 V/m
D.	0.5 × 10-15 V/m
Answer» D. 0.5 × 10-15 V/m

Discussion

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

Discussion

Explore topic-wise MCQs in Physics Questions and Answers.

A potentiometer has uniform potential gradient. The specific resistance of the material of the potentiometer wire is 10-9Ωm and the current passing through it is 0.5A and the cross sectional area of the wire is 10-8m2. Calculate the potential gradient along the potentiometer wire.

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