The magnetic force on a charged particle is in the direction of its velocity if:

Question

The magnetic force on a charged particle is in the direction of its velocity if: A) it is moving in the direction of the field B) it is moving opposite to the direction of the field C) it is moving perpendicular to the field D) it is moving in some other direction E) never A uniform magnetic field is in the positive z direction. A positively charged particle is moving in the positive x direction through the field. The net force on the particle can be made zero by applying an electric field in which direction? A. Positive x B. Negative x C. Positive y D. Negative E. Positive z A magnetic field B = 1 T goes out of the plane of the page. A straight wire carries a current 1 A from right to left. Find the direction of force acting on the wire. A) out of the page B) into the page C) left, in the plane of the page D) right, in the plane of the page E) up, in the plane of the page

Explanation / Answer

4)electric field in positive y direction

asF=q(v X B) is in negative y direction

and F=qE in positive so they will cancel each other

5)according to right hand rule

up, in the plane of the page

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