Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Communication

Question:

Potentiometer wire of length 1 m is connected in series with $450 \Omega$ resistance and 2 V battery. If 2 mV/cm is the potential gradient, then resistance of the potentiometer wire is:

Options:

$50 \Omega$

$45 \Omega$

$20 \Omega$

$25 \Omega$

Correct Answer:

$50 \Omega$

Explanation:

The correct answer is Option (1) → $50 \Omega$