An electron moving in the positive y direction, at rightangles to a magnetic fie

Question

An electron moving in the positive y direction, at rightangles to a magnetic field, experiences a magnetic force in thenegative x direction. What is the direction of the magneticfield? A) its in the positive x direction B) its in the positive y direction C) its in the negative x direction D) its in the negative z direction E) its in the positive z direction WHy? An electron moving in the positive y direction, at rightangles to a magnetic field, experiences a magnetic force in thenegative x direction. What is the direction of the magneticfield? A) its in the positive x direction B) its in the positive y direction C) its in the negative x direction D) its in the negative z direction E) its in the positive z direction WHy?

Explanation / Answer

magnetic field is in negative z - direction .Since fromFleming left hand rule. Since from Fleming's left hand rule,if the middle , first ,thumb are streached perpendicular to each other then the firstfinger indicates direction of magnetic field ,middle fingerindicates motion of the particle ( or ) direction of current then the thumb indicates force act on the particle

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