Tamil Nadu Board of Secondary EducationHSC Science Class 12th

# A bar magnet having a magnetic moment vec"M" is cut into four pieces i.e., first cut in two pieces along the axis of the magnet and each piece is further cut into two pieces. - Physics

Short Note

A bar magnet having a magnetic moment vec"M" is cut into four pieces i.e., first cut in two pieces along the axis of the magnet and each piece is further cut into two pieces. Compute the magnetic moment of each piece.

#### Solution

Consider a bar magnet of magnetic moment vec"M". When a bar magnet first cut in two pieces along the axis, their magnetic moment is vec"M"/2

 S N

Each piece is further cut into two pieces.

Their magnetic moment of each pieces vec"M"/4

Their magnetic moment of each pieces vec"M"_"new" 1/4 vec"M"

Concept: Magnetic Effects of Current
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#### APPEARS IN

Tamil Nadu Board Samacheer Kalvi Class 12th Physics Volume 1 and 2 Answers Guide
Chapter 3 Magnetism and magnetic effects of electric current
Evaluation | Q IV. 1. | Page 192
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