Questions
A metal ring is placed in a magnetic field , with its plane perpendicular to the field. If the magnitude of the field begins to change, the ring will experience
a
a net force
b
a torque about its axis
c
a torque about a diameter
d
a tension along its length
detailed solution
Correct option is D
when magnetic field changes magnetic flux also changes an induced current develops in the ring and each portion of the ring experience a force il x B which is perpendicular to both l and B hence it will be radially inward or outward as a result ring will try to contract or expand hence a tension develops in the string.Talk to our academic expert!
Similar Questions
The direction of induced current in the coils A and B in the coils A and B is the situation shown in the figure is
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