JEE Main · PhysicsHard
A particle of mass and charge is projected with velocity into a region of uniform magnetic field directed perpendicular to the velocity. If the particle is constrained to move in a circular path of radius , and the magnetic field varies with time as , what is the induced electric field at a distance from the center of the path?
- A.
- B.
- C.
- D.
Show correct answer & step-by-step solution
Correct answer: A —
Solution
Using Faraday's law , where . Thus , leading to .
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