NTSE Stage 2 SAT 2016 Question Paper

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Question : 29 of 100
 
Marks: +1, -0
Four situations are given below
I. An infinitely long wire carrying current
II. A rectangular loop carrying current
III.A solenoid of finite length carrying current
IV. A circular loop carrying current.
In which of the above cases will the magnetic field produced be like that of a bar magnet?
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