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A uniform 1.5 T magnetic field points north.  If an electron moves vertically downward...

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lkehoe | (Level 1) Valedictorian

Posted April 15, 2013 at 6:35 PM via web

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A uniform 1.5 T magnetic field points north.  If an electron moves vertically downward (toward the ground) with a speed of 2.5 x 10^7 m/s through this field, what force (magnitude and direction) will act on it?

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pramodpandey | College Teacher | (Level 3) Valedictorian

Posted April 16, 2013 at 8:00 AM (Answer #1)

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 Charge of electron   q=`-1.6xx10^(-19) C`

`` Velocity of electron v=`2.5xx10^7` m/s

magnetic field  B=`1.5 T`

`F=qvB`  N

`=-1.6xx10^(-19)xx2.5xx10^(7)xx1.5 = 6.0xx10^(-12) N`

West.

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