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## Homework Statement

A negative charge of mass m enters into the field between two deflecting parallel plates with length 'l' separated by distance 'd' with a velocity 'v'.Assuming electric field to be uniform,find the maximum charge so that it will not hit a plate

## Homework Equations

Kinematic and electrostatic equations[/B]

## The Attempt at a Solution

F=qE

Work done=qEd

qEd=1/2mv^2

q=mv^2/Ed

I am not sure this is right and that is why i require help