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Maximum magnetic force on electron movin...

Maximum magnetic force on electron moving with velocity `4xx10^(4)m//s` is _____ when it moves in magnetic field having intensity `5xx10^(-5)T`.

A

`1.6xx10^(-19)N`

B

`3.2xx10^(-19)N`

C

`1.6xx10^(-17)N`

D

`3.2xx10^(-17)N`

Text Solution

Verified by Experts

The correct Answer is:
B
From equation `vecF=q(vecvxxvecB)`, maximum magnetic force on electron
F = evB
`=1.6xx10^(-19)xx4xx10^(4)xx5xx10^(-5)`
= `3.2xx10^(-19)N`
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