)a charged particle that is moving in a static uniform magnetic field a) will always experience a magnetic force, regardless of its direction of motion. b) may experience a magnetic force which will cause its speed to change. c) may experience a magnetic force, but its speed will not change. d) may experience a magnetic force, but its direction of motion will not change. e) none of the above statements are true.

C) may experience a magnetic force, but its speed will not change.

Explanation:

When a charged particle is moving in a static uniform magnetic field, it experiences a force whose magnitude is

where

q is the charge

v is the velocity of the charge

B is the strength of the magnetic field

is the angle between the directions of v and B

Also, the direction of the force is perpendicular to both v and B.

Using these information, we can make the following observations:

- The particle does not experience a force when the velocity v is parallel to the field (because ), so option A) is wrong

- The direction of the force is perpendicular to v, so the force does not do any work on the particle: this means that the particle's speed does not change, so option B) is wrong as well

- Finally, option D) is wrong as well, because the direction of the force is perpendicular to v, so it makes the direction of the particle changing (in fact, the particle will follow a circular motion)

Summarizing all these observations, we finally conclude that option C) is correct, since the particle may experience a magnetic force, but its speed will not change

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therefore to conclude i would like to say that,

=more the cloud cover, the lesser the

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