The polarity of the current loop is determined by which rule?

Options

A. Clock Rule
B. Thumb Rule
C. Both A and B
D. None of the above

Explanation

To determine the polarity of a current loop, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Current Loop**: A current loop is a closed loop through which electric current flows. The direction of this current is crucial in determining the magnetic polarity of the loop.

2. **Identify the Rules**: There are two primary rules that can be applied to determine the polarity of a current loop:
- The **Right-Hand Thumb Rule**: This rule states that if you curl the fingers of your right hand in the direction of the current flow, your thumb will point in the direction of the magnetic field lines inside the loop.
- The **Clock Rule**: This rule specifically states that if the current flows in an anti-clockwise direction when viewed from one side, the loop behaves like a north pole. Conversely, if the current flows in a clockwise direction, it behaves like a south pole.

3. **Applying the Clock Rule**:
- If the current in the loop is flowing in an anti-clockwise direction, the loop will act as a north pole.
- If the current is flowing in a clockwise direction, the loop will act as a south pole.

4. **Conclusion**: Based on the above understanding, the polarity of the current loop is primarily determined by the Clock Rule. Therefore, the correct answer to the question is the Clock Rule.

### Final Answer:
The polarity of the current loop is determined by the **Clock Rule**.

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