Questions
M and are the magnetic dipole moments of the two magnets, which are joined to form a cross as shown in figure. The inclination of the system with the field, if their combination is suspended freely in a uniform external magnetic field B is
M and are the magnetic dipole moments of the two magnets, which are joined to form a cross figure. The inclination of the system with the field, if their combination is suspended freely in a uniform external magnetic field B is
detailed solution
Correct option is C
Torque acting on magnet (1) is τ1=MBsinθTorque acting on magnet (2) is τ2=3MBsin90−θFor equilibrium , τ1=τ2⇒MBsinθ=3MBsin90−θ⇒tanθ=3⇒θ=60oTalk to our academic expert!
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Rate of change of torque with deflection is maximum for a magnet suspended freely in a uniform magnetic field of induction B, when
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