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A: When currents vary with time, Newton'...

A: When currents vary with time, Newton's third law is valid only if momentum carried by the electromagnetic field is taken into account.
R: Magnetic field lines always form closed loops.

A

If both Assertion & Reason are true and the reason is the correct explanation of the assertion then mark (1)

B

If both Assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark 2.

C

If assertion is true statement but Reason is false, then mark (3)

D

If both Assertion and Reason are false statements, then mark (4)

Text Solution

Verified by Experts

The correct Answer is:
B
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AAKASH INSTITUTE-MOVING CHARGE AND MAGNESIUM-SECTION D
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  4. A: The trajectory of a charge when it is projected perpendicular to an...

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  5. A: Like currents repel and unlike currents attract each other (in con...

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  6. A: A magnetic dipole experiences maximum torque when it is placed norm...

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  7. A: The relation between magnetic moment and angular momentum is true f...

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  8. A: When currents vary with time, Newton's third law is valid only if m...

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  9. A: In the expression for Lorentza force, vecF=q(vecvxxvecB+vecE). If o...

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  10. A: Ampere circuital law is not independent of the Biot- Savart's law. ...

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  11. A: The work done by magnetic field on a moving charge is zero. R: Th...

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  12. A: In any magnetic field region the line integral ointvecB.vec(dl) alo...

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  13. A: The magnetic field always accelerates a moving charge if the moving...

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  14. A: The magnetic moment of a current carrying planar loop does depend o...

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