Question

Force between two identical short bar magnets whose centres are r metre apart is 4.8 N when their axes are in the same line. If the separation is increased to 2r metre, the force between them is reduced to A. 0.3N B. 0.6N C. 24N D. 1.2

Name: force between two identical short bar magnets whose centres are r metre apart is 48 n when their axes are in the same line if the separation is increased to 2r metre the force between them i 12145
Uploaded: 2024-05-10T10:26:21-08:00
Duration: 3 min 17 s
Channel: Adi S
Description: force between two identical short bar magnets whose centres are r metre apart is 48 n when their axes are in the same line if the separation is increased to 2r metre the force between them i 12145

          Force between two identical short bar magnets whose centres are  r metre apart is 4.8 N when their axes are in the same line. If the separation is increased to 2r metre, the force between them is reduced to
A. 0.3N
B. 0.6N
C. 24N
D. 1.2

Added by Samantha R.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Adi S

05/10/2024

Step 1

Step 1: The force between two bar magnets is given by the formula: $F = \frac{k \cdot m_1 \cdot m_2}{r^4}$ where $F$ is the force, $k$ is a constant, $m_1$ and $m_2$ are the magnetic moments of the two magnets, and $r$ is the distance between their centers. Show more…

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Force between two identical short bar magnets whose centres are r metre apart is 4.8 N when their axes are in the same line. If the separation is increased to 2r metre, the force between them is reduced to A. 0.3N B. 0.6N C. 24N D. 1.2