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(A) The Lorentz force acting on a charged particle moving in a magnetic field is given by the formula $\overrightarrow{F} = q(\overrightarrow{v} 	ime

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Zero

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(A) The Lorentz force acting on a charged particle moving in a magnetic field is given by the formula $\overrightarrow{F} = q(\overrightarrow{v} 	imes \overrightarrow{B})$.Here,the charge of an electron is $q = -e$.Since the electron is moving in the direction of the magnetic field,the angle $	heta$ between the velocity vector $\overrightarrow{v}$ and the magnetic field vector $\overrightarrow{B}$ is $0^\circ$.The magnitude of the force is given by $F = |q|vB \sin 	heta$.Substituting $	heta = 0^\circ$,we get $F = evB \sin(0^\circ) = evB(0) = 0$.Therefore,the force on the electron is zero.

If an electron is moving in the direction of the magnetic field $\overrightarrow{B}$ with a velocity $\overrightarrow{v}$,then the force on the electron is:

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