Physics
NULL
Medium
Question
A particle of mass m charge q and speed V enters a uniform magnetic radius r. The radius r of the circle is_________________?
A
independent mass m
B
directly proportional to m
✓ Official correct answer
C
directly proportional to q
D
directly proportional to B
Community credibility
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A
independent mass m
No member explanations yet for this option.
B
directly proportional to m
No member explanations yet for this option.
C
directly proportional to q
No member explanations yet for this option.
D
directly proportional to B
No member explanations yet for this option.
Explanation
The radius of a charged particle's circular path in a magnetic field is r = mv/(qB) — directly proportional to mass (m), and inversely proportional to B.
So the correct answer is directly proportional to m.
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