What are the units of the following physical quantities?
i) magnetic moment ii) magnetic permeability

Explanation

To determine the units of the given physical quantities, we will analyze each quantity step by step.

### Step 1: Magnetic Moment
1. **Definition**: The magnetic moment (often denoted as \( m \)) is a measure of the strength and orientation of a magnetic source. It can be defined in terms of the torque (\( \tau \)) acting on a magnetic dipole in a magnetic field.
2. **Formula**: The torque (\( \tau \)) acting on a magnetic dipole is given by:
\[ \tau = NIA \sin(\theta) \]
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