Magnetic potential and magnitude of magnetic induction due to short magnetic dipole of moment `2 Am^(2)` axial point at a distance of 20 cm from its c

Question

Magnetic potential and magnitude of magnetic induction due to short magnetic dipole of moment `2 Am^(2)` axial point at a distance of 20 cm from its c

Magnetic potential and magnitude of magnetic induction due to short magnetic dipole of moment `2 Am^(2)` axial point at a distance of 20 cm from its centre are
A. `5xx10^(-6) J//Am, 5 xx 10^(-5) T`
B. `5xx10^(6) J//Am, 5 xx 10^(5) T`
C. `5 xx10^(6) J//Am,5 xx10^(5) T`
D. `5xx10^(-6) J//Am,5 xx 10^(-5)T`

Monjur Alahi

6 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - A
`V=(mu_(0))/(4pi)( M)/(r^(2))`
`4xx10^(-4)=(10^(-7)xx2)/(4xx10^(-2))=5xx10^(-6)J/Am`
`B=(mu_(0))/(4pi)(2M)/(r^(3))=(10^(-7)xx2xx2)/(8xx10^(-3))=0.5xx10^(-4)`
`=5xx10^(-5) T`

6 views Answered 2023-02-05 15:29