The magnetic dipole moment of current loop is independent of

Options

A. number of turns
B. area of loop
C. current in the loop
D. magnetic field in which it is lying

Explanation

To determine what the magnetic dipole moment of a current loop is independent of, we start by recalling the formula for the magnetic dipole moment (μ) of a current loop:

\[ \mu = n \cdot I \cdot A \]

where:
- \( n \) = number of turns in the loop,
- \( I \) = current flowing through the loop,
- \( A \) = area of the loop.

Now, let's analyze each component:

1. **Number of Turns (n)**: The magnetic dipole moment depends on the number of turns in the loop. More turns mean a larger magnetic dipole moment.

2. **Current (I)**: The magnetic dipole moment is directly proportional to the current flowing through the loop. If the current increases, the magnetic dipole moment increases.

3. **Area (A)**: The area of the loop also affects the magnetic dipole moment. A larger area results in a larger magnetic dipole moment.

Now, we need to identify what the magnetic dipole moment is independent of.

4. **Magnetic Field**: The magnetic dipole moment does not depend on the external magnetic field in which the loop is placed. The magnetic dipole moment is a property of the loop itself and is determined by the current and the geometry of the loop, not the external magnetic field.

Thus, the correct answer is that the magnetic dipole moment of a current loop is independent of the external magnetic field.

### Final Answer:
The magnetic dipole moment of a current loop is independent of the external magnetic field.