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 2 years ago
In which direction does a magnetic force act on an electron that is moving in the positive xdirection in a magnetic field pointing in the positive zdirection?
A) any direction in the xyplane
B) the negative ydirection
c) the negative xdirection
D) the positive ydirection
a particle with charge q is at rest when a magnetic field is suddenly turned on. The field
points in the zdirection. What is the direction of the net force acting on the charged particle?
a) In the zdirection.
b) There is no force on the particle.
c) In the y direction
d) In the x direction
 2 years ago
In which direction does a magnetic force act on an electron that is moving in the positive xdirection in a magnetic field pointing in the positive zdirection? A) any direction in the xyplane B) the negative ydirection c) the negative xdirection D) the positive ydirection a particle with charge q is at rest when a magnetic field is suddenly turned on. The field points in the zdirection. What is the direction of the net force acting on the charged particle? a) In the zdirection. b) There is no force on the particle. c) In the y direction d) In the x direction

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imron07
 2 years ago
Best ResponseYou've already chosen the best response.1The direction of magnetic force is the same as vextor v x B direction. It follows right hand rule, so postive x X positive z = negative y direction. F=qE. The force direction follows magnetic field E direction. Hence a)

ghazi
 2 years ago
Best ResponseYou've already chosen the best response.2\[F=q*(V*B)\] take the cross product of the movement of electron and applied magnetic field

AERONIK
 2 years ago
Best ResponseYou've already chosen the best response.0there is no force acting on the particle in the second question as the magnetic force acts only on those particles which are in motion.

imron07
 2 years ago
Best ResponseYou've already chosen the best response.1@AERONIK : the magnetic force is changing (from zero then turned on).

zhiyuan3yu5
 2 years ago
Best ResponseYou've already chosen the best response.0i did the right hand rule for the first one and got neg y as well. for the 2nd question, is it b? no net force?

Ninalynn
 2 years ago
Best ResponseYou've already chosen the best response.0Actually yes I think its B
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