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Solution


Q.

Which of the following determine the direction of magnetic field due to a current carrying conductor
1 Faraday's laws of electromagnetic induction  
2 Fleming's left hand rule  
3 Lenz's law  
4 Maxwell's cork screw-rule  

Ans.

(4)

According to Maxwell's Cork Screw-Rule, if we consider ourselves driving a cork screw in the direction of current, then the direction of the rotation of cork Screw is the direction of the Magnetic field.