Physics, asked by MiniDoraemon, 4 months ago

A magnetic needle lying parallel to a magnetic field required w unit of work to turn it through 60° . the torque needed to maintain the needle in the position will be [AIEEE 2003] ​

Answers

Answered by TheLifeRacer
3

Answer:

The torque needed to maintain the needle in the position will be W√3

Explanation:

W = MB (1-cosθ )

=> W = MB(1-cos60° ) [∵ θ= 60 ° ]

  • or, W = MB/2 or MB = 2W ____(1)

  • Torque τ = MBsin60°

  • = MB √3 /2 = 2W √3/2 From (1)

  • = W/√3 Answer

_______________________________

Answered by Anonymous
2

Answer:

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