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

Question

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

MARKS App · Accepted Answer

F → = 0 ⇒ F → e F → m = 0 ⇒ F e = F m ⇒ qE = qVB V = E B · · · 1 F = d p d t = Nmv t · · · 2 I = Ne t ⇒ t = Ne I · · · 3 From (1), (2) and (3), F = mEI eB

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