Question

can someone explain the particles movement in terms of flemmings left hand rule please:

http://dev.physicslab.org/asp/applets/javaphysmath/java/partmagn/default.asp

Answer 1

Please go to the Physics group.

Answer 2

Physics is applied math.

Answer 3

physics and maths are pretty similar no? this group is more active

Answer 4

i could state that question using just maths

Answer 5

eigenschmeigen: as ParthKohli suggest please post this in the Physics group instead.

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Answer 6

fiinne i guess i should

Answer 7

middle finger =current
first finger = B-field
thumb =Force

B-field points into paper. so first finger points into paper.
travelling direction of positive ions = direction of current so first finger follows the movement of the positive ions.
Force then point to the centre of the circular track.

Answer 8

I mean there is already an explanation of the motion and an equation to prove it. If you want a physical representaiton of how to use your hand then go to a picture.
http://en.wikipedia.org/wiki/Fleming's_left-hand_rule_for_motors
You know B is the magnetic field and I is the current.

Answer 9

ah i was confused, i forgot conventional current is the velocity of positive charges! derp

Answer 10

you can remember it next time :D

Answer 11

thanks

Answer 12

Remember for the positive particles you flip the direction of the force.

Answer 13

its a shame i can only give one best answer thankyou @Romero and @CoCoTsoi

Answer 14

The reason why it's making a circular path is because the particle is going straight as it enters the magnetic field. The force from the magnetic filed is perpendicular to that of the motion . So u can see by pushing a pencil straight in the table and if you try to keep moving the pencil and exert a perpendicular force to it while still going straight it will turn and the path will look like a circle.

Answer 15

If you need more help with physics post them here if Im still on. I might be able to help

Answer 16

thanks :)