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Question

A circular loop of radius R carrying a current I is placed in a uniform magnetic field with its plane perpendicular to B. The force on the loop is:


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Solution

Step1:

The magnetic Lorentz force acting on the circular loop of radius r carrying current i is zero Since the plane of magnetic field is perpendicular to current element.

Hence the force acting on it is zero.

Step2: We can express Lorentz force mathematically as:

F=qE+qv×B

It is the force which is exerted on (q) charged particle with v velocity through electric field E and magnetic field B.

  1. Lorentz force are used in Particle acceleration and cyclotron
  2. A bubble chamber also uses a Lorentz force

Hence the force acting on it is zero.


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