Physics · Moving Charges and Magnetism
Assertion (A): An electron and a proton entering with the same momentum vector p into a uniform magnetic field B (where p ⊥ B) describe a circular path of the exact same radius. Reason (R): The radius of the circular path described by a charged particle in a magnetic field is given by r = mvqB = pqB. Choose the correct option:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1(A) is false and (R) is also false.
- 2(A) is true, but (R) is false.
- 3Both (A) and (R) are true, but (R) is not the correct explanation of (A).
- 4Both (A) and (R) are true and (R) is the correct explanation of (A).✓
Correct answer
Both (A) and (R) are true and (R) is the correct explanation of (A).
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