Question

Write down the unit of magnetic dipole moment.

Hint:

The magnetic dipole moment characterizes how strongly a magnet interacts with an external magnetic field. It is a fundamental concept in electromagnetism and is used in applications like motors, generators, and MRI machines.

Answer 1

Unit of Magnetic Dipole Moment:
The magnetic dipole moment is a measure of the strength of a magnetic source, such as a current loop or a bar magnet. It is a vector quantity, and its SI unit is the Ampere-meter squared (\( \text{A·m}^2 \)). The magnetic dipole moment \( \mu \) is related to the current \( I \) flowing through a loop and the area \( A \) of the loop: \[ \mu = I . A, \] where: - \( I \) is the current (in Amperes),
- \( A \) is the area of the loop (in square meters). Therefore, the unit of magnetic dipole moment is: \[ \mu = \text{Ampere-meter squared (A·m}^2\text{)}. \] This unit is crucial for understanding how a current-carrying loop interacts with external magnetic fields.