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Vectors> Hello, Can somebody please answer the que...

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Hello,

Can somebody please answer the question attached in the image below? Thank you.

Shams Ishtiaque Rahman , 7 Years ago

Grade 12th pass

1 Answers

Eshan

Last Activity: 6 Years ago

Dear student,

The electric field due to the potential difference of $5MV$ over a distance of $0.08m$ is

$E=\dfrac{V}{d}=6.25\times 10^7 V/m$
Hence force acting on the proton= $eE$
Work done on proton by electric field from A to B is $eE.d$
This work done is equal to the energy gained by the proton.

Hence $eE.d=\dfrac{1}{2}mv^2$
$\implies v=\sqrt{\dfrac{2eEd}{m}}$

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