question_answer

A non-relativistic proton beam passes without deviation through the region of space where there are uniform transverse mutually perpendicular electric and magnetic fields with\[E=120\text{ }kV/m\]and\[B=50mT\]. Then the beam strikes a grounded target. Find the force (in\[\mu N\]) with which the beam acts on the target if the beam current is equal to\[I=0.80mA.\]

Answer:

20.00