an electron beam projected along +x axis experiences a force due to the magnetic field along the +y axis .what is the direction of the magnetic field ?

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Solution

F = q v x B
The cross product of directions of v x B will be in +z direction. Since the charge on the electrons is negative, the force will be -ve and thus, in the -z direction.

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an electron beam projected along +x axis experiences a force due to the magnetic field along the +y axis .what is the direction of the magnetic field ?

F = q v x BThe cross product of directions of v x B will be in +z direction. Since the charge on the electrons is negative, the force will be -ve and thus, in the -z direction.

F = q v x B
The cross product of directions of v x B will be in +z direction. Since the charge on the electrons is negative, the force will be -ve and thus, in the -z direction.