Question

A potential energy of a bar magnet moment 8Amsquare placed in a uniform magnetic field of 2T at an angle of 120°is equal to

Answer 1

Answer:

✅ POTENTIAL ENERGY ( PE ) = 8 JOULES ✅

Explanation:

★ MAGNETIC DIPOLE MOMENT ★

★ GIVEN ;

» Magnetic moment ( M ) = 8 A / m²

» Magnetic Field ( B ) = 2 Tesla

» Angle made by Bar Magnet with Magnetic Field = 120 °

★ » POTENTIAL ENERGY ( PE ) = ???

_________ [ BY USING FORMULA ] _______

[ $Potential \: energy \: ( \: PE \: ) \: = - \: magnetic \: moment \: ( \: m \: ) \: \times \: magnetic \: field \: ( \: b \: ) \: \times \: \cos( \alpha )$ ]

★ PE = - M × B × Cos 120 °

» PE = - 8 × 2 × ( - 1 / 2 )

⏩ POTENTIAL ENERGY = 8 JOULES ⏪

_______________________________________

ANSWER :- Potential Energy of Bar Magnet having Magnetic Moment ( M ) is ;

→ PE = 8 Joules ←

Answer 2

Answer:

8 J

Explanation:

u = -mbcos theeta= -8×2×-1/2= 8