a charged particle is moving with a constant velocity. on entering a uniform magnetic field the particle.
may increase in kinetic energy
must decrease in speed
may change its direction of motion
must change the magnitude of momentum
A magnetic force acts on a charge particle moving at a constant speed perpendicular to a uniform magnetic field.The magnitude of the magnetic force on this particle will increase if the
time of travel of the charge increase
speed of the charge decrease
magnitude of the charge decrease
flux density of magnetic field increase
2007-04-01 03:27:25 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Physics
In a magnetic field B , a charged particle q will not experience any Lorentz magnetic force either when the particle is at rest or when it moves parallel to the direction of magnetic field B.
When the charged particle is moving with velocity v in a magnetic field in a direction inclined at angle theta the force F on it is given by qvB sin theta,the force F is perpendicular to both the direction of B as well as direction of v.
As F is perpendicular to v , the force F does not change the speed , it only changes the direction of motion.Hence speed, kinetic energy and magnitude of momentum will not change , ONLY DIRECTION OF MOTION WILL CHANGE
As speed is distance / time,therefore increase of time means decrease of speed i.e.magnitude of v and hence increase of time or decrease of speed will decrease the force F.
Any decrease in magnitude of charge will also decrease force F.
The INCREASE OF FLUX DENSITY OF MAGNETIC FIELD WILL INCREASE THE MAGNITUDE OF MAGNETIC FORCE F
2007-04-01 05:58:34 · answer #1 · answered by ukmudgal 6 · 0⤊ 0⤋
For the first part the first, third and fourth are likely.
For the second, the third and fourth are likely.
You have to think of these things in a vector context. Think of the particle as a ball rolling on a board and the magnetic field as a slant on the board.
2007-04-01 03:52:32 · answer #2 · answered by eric l 6 · 0⤊ 0⤋
Hi. I think the force acting on the particle causes a change in momentum and the flux density changes the force.
2007-04-01 03:45:31 · answer #3 · answered by Cirric 7 · 0⤊ 0⤋
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2016-11-25 19:08:30 · answer #4 · answered by ? 4 · 0⤊ 0⤋
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2007-04-01 03:43:40 · answer #5 · answered by Making_Happy 4 · 0⤊ 0⤋