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Grade 10Magnetism

If an electron describes half a revolution in a circle of radius 'r' in a magnetic field 'B' , the energy aquired by it is
a. zero b, 1/2(mv2)
c.1/4(mv2) d. (Bev)r
I know the answer...but I dunno its reason...so plz help me in this..

Profile image of Navjyot Kalra
12 Years agoGrade 10
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1 Answer

Profile image of ROSHAN MUJEEB
5 Years ago
zero,as magnetic field does no work

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