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A particle having the same charge as of ...

A particle having the same charge as of electron moves in a circular path of radius 0.5 cm under the influence of a magnetic field of 0.5 T. If an electric field of 100V/m makes it to move in a straight path, then the mass of the particle is ( Given charge of electron `= 1.6 xx 10^(-19)C`)

A

`2.0xx10^(-24)` kg

B

`1.6xx10^(-27)`kg

C

`9.1xx10^(-31)`kg

D

`1.6xx10^(-19)`kg

Text Solution

Verified by Experts

The correct Answer is:
A
`qE = qVB" "…(i)`
and `r =(mV)/(qB)" "…(ii)`
from (i) and (ii)
`m=(qB^2r)/E`
`m=(1.6 xx10^(-19)xx0.25 xx0.5xx10^(-2))/(10^2)~~2 xx10^(-24) kg`
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