When a particle of charge qqq moves with a velocity v⃗ v→v_vec in a magnetic field B⃗ B→B_vec, the particle is acted upon by a force F⃗ F→F_vec exerted by the magnetic field. To find the direction and magnitude of this force, follow the steps in the following Tactics Box. Keep in mind that the right-hand rule for forces shown in step 2 gives the direction of the force on a positive charge. For a negative charge, the force will be in the opposite direction.   If the magnetic field of the wire is 2.5×10−4 TT and the electron moves at 1.0×107 m/sm/s , what is the magnitude FFF of the force exerted on the electron?

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Magnetic Force

A magnetic force arises when a charged particle or a current-carrying conductor is placed in a magnetic field. It is created because of the movement of the charged particles.