Question

25. Around any electron in motion we have a. electric field. b. magnetic field. c. both...

25. Around any electron in motion we have
a. electric field. b. magnetic field. c. both fields.   

26. The lines of magnetic field generated by a current passing:
a) are in the direction of the current b) are opposite to the direction of the current c) leave the cable radially OR are concentric circles around the cable

27. A field____can act on a moving electric charge.
a. electric b. magnetic. c. both of them.

28. A magnetic field does not interact with
a. stationary electric charge. b. a moving electric charge. c. a stationary magnet. d. a moving magnet.

With a little explanation please!
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Answer #1

25) Any charge in motion produces electric and magnetic field, but it also depends on the acceleration of the charged particle. If the acceleration is equal to zero, that is if the particle is in uniform motion then it produces magnetic field and electric field which are independent of each other, but if the acceleration is non zero then both the electric and magnetic fields are dependent on each other.

So, option C is correct.

26)The lines of magnetic fields generating by the current passing are concentric circles around the cable.

So, option C is correct.

27)Magnetic field can act on moving electric charge.

So, option B is correct.

28)  A magnetic field does not interact with stationary electric charge because charge experience a force near the magnetic fields.

So, option A is correct.

Thanks

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