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In an experiment ,electrons are accelera...

In an experiment ,electrons are accelerated from rest, by applying a voltage of 500 V.Calculate the radius of the path if a magnetic field 100 m T is then applied .Charge of the electron `=1.6 xx 10^-19 C `
Mass of the electron `=9.1 xx 10 ^(-31)` Kgl

A

`7.5xx10^(-4)m`

B

`7.5xx10^(-2)m`

C

`7.5xx10^(-3)m`

D

`7.5 m`

Text Solution

Verified by Experts

The correct Answer is:
A
`1/2mv^(2)=ev_(0)` and `R=(mv)/(qB)`
gives: `R square 7.6xx10^(-4)m`
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