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Solution


Q.

Assertion: A current carrying rod is suspended between U-shaped magnet, the rod deflects.
Reason: A force is exerted on the rod due to magnetic field.
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.

(1)

A force is always exerted due to magnetic field in the same way electric current flowing through any conductor produces magnetic field. And in this case, Fleming’s left-hand rule is used to predict directions of the magnetic field, current and displacement. Thus, assertion and reason both are correct and reason is the correct explanation of assertion.