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Physics Question on Moving charges and magnetism

An electron is moving along positive x direction in xy plane, magnetic field points in negative z direction, then the force due to magnetic field on electron points in the direction

A

j

B

-j

C

k

D

-k

Answer

-j

Explanation

Solution

The correct option is (B): -j

As electron in negative charge F⃗=−eV⃗×B⃗\vec{F}=-e\vec{V}\times\vec{B}