Bar Magnet

Practice Questions:

Question 1: easy

Following figures show the arrangement of bar magnets in different configuration. Each
magnet has magnetic dipole moment \[\overrightarrow{m}\] . Which configuration has highest net magnetic dipole moment?

View Answer

💬 Discuss this Question

Question 2: easy

A loop in the shape of an equilateral triangle of side l is suspended between the pole pieces of a
permanent magnet such that \[\overrightarrow{B}\] is in plane of the loop. If due to a current i in the triangle a torque τ acts on it, the side l of the triangle is :

1. \[\frac{2}{\sqrt{3}}.\left( \frac{\tau}{Bi} \right)\]

2. \[\frac{1}{\sqrt{3}}.\frac{\tau}{Bi}\]

3. \[2\left( \frac{\tau}{\sqrt{3}Bi} \right)^{1/2}\]

4. \[\frac{2}{\sqrt{3}}.\left( \frac{\tau}{Bi} \right)^{1/2}\]

View Answer

💬 Discuss this Question

Question 3: easy

A bar magnet is placed inside a non-uniform magnetic field. It may experience :

1. force and torque

2. force but not torque

3. torque but not force

4. Neither force nor torque

View Answer

💬 Discuss this Question