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Solution


Q.

Assertion: A current carrying conductor experiences a force in a magnetic field.
Reason: The net charge on a current carrying conductor is zero.
1 Both assertion and reason are correct and reason is the correct explanation of assertion.  
2 Both assertion and reason are correct, but reason is not the correct explanation of assertion.  
3 Assertion is true, but reason is false.  
4 Assertion is false, but reason is true.  

Ans.

(2)

When a current carrying conductor having no net charge is placed in a magnetic field, the free electrons of the conductor move towards the positive end of the conductor with same drift velocity, hence a magnetic force acts on them. The positive ions of the conductor being stationary, do not experience any magnetic field. Thus, both assertion and reason are correct but reason is not the correct explanation of the assertion.