A red hot steel needle is suspended along the North South direction and cooled. What happens

Explanation

To solve the question about what happens to a red hot steel needle suspended along the North-South direction when it is cooled, we can follow these steps:

### Step 1: Understand the Initial Condition
The needle is initially red hot, which means it is at a high temperature. At this temperature, the thermal energy is high enough to disrupt the alignment of magnetic domains within the steel needle.

**Hint:** Remember that heat affects the arrangement of atoms and magnetic domains in materials.

### Step 2: Identify the Magnetic Field
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