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 what direction?
Correct answer: A. Positive y
- A. Positive y
- B. Negative y
- C. Positive x
- D. Negative x
Explanation
F direction= = negative y- direction if electric field is applied in positive y-direction, then Fm = Fe (Fnet = 0)
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Electromagnetism
Magnetic flux density and magnetic flux describe the strength of a magnetic field and the field passing through a surface. A charged particle moving through a magnetic field experiences a force perpendicular to its velocity and may follow circular or helical motion, depending on the angle between velocity and field.
Practise Electromagnetism
1,176 free Electromagnetism MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Electromagnetism questions
A charged particle enters in parallel direction to an electric field and a magnetic field such that both fields are parallel to each other. Then force on the charge is:
An electron enters a region of uniform prependicular E and B fields. It is observed that the velocity V of the electron is unaffected. A possible explanation is:
Which graph correctly gives the magnitude of the magnetic field outside an infinitely long straight current carrying wire as a function of the distance "r" from the wire?
The unit of permeability of free space is:
If current flows in a horizontal straight wire towards East. The direction of magnetic field around it will be:
Magnetic field lines around a current carrying wire are drawn in clockwise direction on a page. The current is flowing: