Given below are two statements. One is labelled as Assertion (A) and the other is labelled as reason (R).

In the light of the given statements, choose the correct answer from the options given.

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Both (A) and (R) are true but (R) is not the correct explanation of (A)

Both (A) and (R) are true and (R) is the correct explanation of (A)

Both (A) and (R) are false

(A) is true but (R) is false

answer is C.

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Detailed Solution

In an atom, electrons revolve around the nucleus and as such the circular orbit of electrons may be considered as the small current loops. In addition to orbital motion, an electron has got spin motion also. So the total magnetic moment of electron is the vector sum of its magnetic moment due to orbital and spin motion. Charge particles at rest do not produce electric field. Hence the assertion is true.

A charged particle will produce a magnetic field only when it is in motion. A charged particle at rest cannot produce a magnetic field. Therefore the reason is false.

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