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An electron in a helium atom is revolvin...

An electron in a helium atom is revolving in the first orbit with a speed of `4*5xx10^6m//s`. If radius of orbit is `0*26 Å`, what is the magnetic moment of the electron?

Text Solution

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Here, `v=4*5xx10^6m//s`,
`r=0*26 Å=0*26xx10^-(10)m, M=?`
`M=IA=e/T(pir^2)=(ev)/(2pir):pir^2`
`=(evr)/(2)=(1*6xx10^(-19)xx4*5xx10^6xx0*26xx10^(-10))/(2)`
`M=9*36xx10^(-24)Am^2`
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