A proton beam passes without deviation t...

A proton beam passes without deviation through a region of space where there are uniform transverse mutually perpendicular electric and magnetic field with `E` and `B` Then the beam strikes a grounded target. Find the force imparted by the beam on the target if the beam current is equal to I .

`(mEI)/(eB)`

`(mIE)/e`

`(mEI)/B`

`(eIm)/B`

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