KCET · Physics · Magnetic Effects of Current

In a cyclotron a charged particle

A speeds up in dee
B undergoes acceleration all the time
C slows down within a dee and speeds up between dees
D speeds up between the dees because of the magnetic field.

Verified Solution

Answer & Solution

Correct Answer

(B) undergoes acceleration all the time

Step-by-step Solution

Detailed explanation

Between the dee's the charged particle accelerates due to electric field. Within the dee the particle undergoes circular motion. Hence it undergoes centripetal acceleration.

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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