Question

Assertion: Magnetism is relativistic.
Reason: When we move along with the charge so that there is no motion relative to us, we find no magnetic field associated with the charge.
A. If both assertion and reason are true and reason is the correct explanation of assertion.
B. If both assertion and reason are true but reason is not the correct explanation of assertion.
C. If assertion is true but reason is false.
D. If assertion and reason both are false.

Answer 1

Correct Answer - A
A magnetic field is produced by the motion of electric charge. Since motion is relative, the magnetic field is also relative.