A uniform magnetic field exists in the plane of the paper from bottom to top.
A force existing out of the plane of the paper acts on a proton and an electron moving in the magnetic field.
a) Predict the directions in which the electron and proton will move and name the rule you have used.
b) Draw a neat labelled diagram of a device which is based on this rule.
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Answer:
a predict the direction
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Explanation:For the given figure, the proton and electron are moving in opposite directions to each other and is perpendicular to the direction of magnetic field. Now, we know that the direction of current is taken opposite to the direction of motion of electron.
So, both electron and proton have current in same direction. Therefore, the forces acting on them are given by Fleming s left hand rule and they are pointing into the plane of the paper.
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