Question
Physics Question on Moving charges and magnetism
If a charge particle enters perpendicular in the uniform magnetic field, then:
A
energy and momentum both remains constant
B
energy remains constant but momentum changes
C
both energy and momentum changes
D
energy changes but momentum remains constant
Answer
energy remains constant but momentum changes
Explanation
Solution
When charge particle enters in a magnetic field perpendicularly, then the magnitude of its velocity remains constant, but direction changes, so its energy (scalar quantity) remains constant, but its momentum (vector quantity) changes.