A non-relativistic protons beampasses withoutdiviationthroughthe regionof space wherethere are unifrom transverse mutuallyperpendicularelectricand magneticfieldswith E = 120 kV//m and B = 50 mT. Then the beam strikes a groundedtarget. Findthe force withwhichthe beam acts on the targetif the beam currentis equal to I = 0.80mA.

A non-relativistic protons beampasses withoutdiviationthroughthe regio

1.	A non-relativistic protons beampasses withoutdiviationthroughthe regionof space wherethere are unifrom transverse mutuallyperpendicularelectricand magneticfieldswith E = 120 kV//m and B = 50 mT. Then the beam strikes a groundedtarget. Findthe force withwhichthe beam acts on the targetif the beam currentis equal to I = 0.80mA.
Answer» Solution :In crossed field, `eE = evB`, so `v =(E)/(B)` Then `F`, force externed on the PLANE `= (1)/(e) XX m (E)/(B) = (m I E)/(EB)`

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