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..

Question

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..

ROSHAN MUJEEB · Answer

zero,as magnetic field does no work

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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(mv 2 ) c.1/4(mv 2 ) d. (Bev) r I know the answer...but I dunno its reason...so plz help me in this..

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..

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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(mv 2 ) c.1/4(mv 2 ) d. (Bev) r I know the answer...but I dunno its reason...so plz help me in this..

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..

1 Answers

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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..