Questions
A current loop in a magnetic field
a
can be in equilibrium in two orientations, both the equilibrium states are unstable
b
can be in equilibrium in two orientations, one stable while the other is unstable
c
experiences a torque whether the field is uniform or non uniform in non orientations
d
can be in equilibrium in one orientation
detailed solution
Correct option is B
When a current loop is placed in a magnetic field it experiences a torque. It is given byτ→=M→×B→Where M→is the magnetic moment of the loop andB→is the magnetic field.or τ=MBsinθ where θ is angle between M and BWhen M→ and B→ are parallel (i.e. θ = 0°) the equilibrium is stable and when they are antiparallel (i .e. θ=π) the equilibrium is unstable.Talk to our academic expert!
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