Rate of change of torque τ with deflection θ is maximum for magnet suspended freely in a uniform magnetic field of induction B , when

Question

Rate of change of torque τ with deflection θ is maximum for magnet suspended freely in a uniform magnetic field of induction B , when, θ = 90 °, θ = 60 °, θ = 45 °, θ = 0 °

MARKS App · Accepted Answer

Given that, θ = 0 ° Torque, τ = m B sin ⁡ ϕ τ will be maximum, when ϕ = 90 ° ∴ Deflection angle, θ = 90 - ϕ = 90 ° - 90 ° = 0 °

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