Question

The electrons in a particle beam each have a kinetic energy K. (a) What is the magnitude of the electric field that will stop these electrons in a distance d? (Use any variable or symbol stated above along with the following as necessary: e for the charge of electron.) (b) What is the direction of the electric field that will stop these electrons in a distance d? O in the direction of the motion O opposite to the direction of the motion O perpendicular to the direction of the motion

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Answer #1

Potential = workdone/charge

Electric field = potential x distance

Therefore electric field = (work done x distance) /charge

we knos chage ce) e. Ce ) distanc d) e. Ek d し.teld dsedom U -Orrbǐ左

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