A proton and an electron both moving with the same velocity v enter into a region of magnetic field directed perpendicular to the velocity of the particles. They will now move in circular orbits such that
Correct answer: C. The time period for the proton will be higher
- A. Their time periods will be the same
- B. The time period for the electron will be higher
- C. The time period for the proton will be higher
- D. Their orbital radii will be the same
Explanation
Option B is correctWe know that period T= qB/2πm i.e., T∝m (Since q and B are same) ∵ Mass of proton > Mass of electron ∴ Time period of proton > Time period of electron.
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About Electromagnetic Induction
Changing magnetic flux induces an emf according to Faraday's law, while Lenz's law gives the direction that opposes the change producing it. Transformers apply induction between coils to step alternating voltage up or down, with turns ratio, current transformation and energy losses determining practical operation.
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