heeeelp explain the answer In which direction does a magnetic force act on an el

Question

heeeelp explain the answer

In which direction does a magnetic force act on an electron that is moving in the positive x-direction in a magnetic field pointing in the positive z-direction? The positive y-direction the negative x-direction the negative y-direction any direction in the xy-plane a changed particle is moving in a constant magnetic field. Which of the following statements concerning the magnetic force exerted on the particle is (are) true? (assume that the magnetic field is not parallel or antiparallel to the velocity.) it does no work on the particle it may increase the speed of the particle

Explanation / Answer

for finding the direction of Magnetic Field use Maxwell's Right hand thumb rule

in which

move the curl of of your fingers of right hand in the direction of velocity to the magnetic field and then the direction of your thumb points the direction of magnetic field.(for positive charge)

and for negative charge just reverse the direction of magnetic field.

so in this case

the thumb points in negative y direction but as it is a electron thus the direction of magnetic field is positive y direction.

b)

in same way we can find out the direction of force.

in this case

as the magnetic field is not parallel or anti-parallel to the velocity we have to find their respective components and then use W=F.s

if they come out to be positive then it does some work on the particle.

and definitely it will increase or decrease the speed according to the direction of field

Related Questions

Navigate

• Browse (All)
• Browse H
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.