Electro Magnetic Induction And Alternating Currents Question 491

Question: A small square loop of wire of side is placed inside a large square loop of wire of side L(L>) .The loop are coplanar and their centre coincide. The mutual inductance of the system is proportional to

Options:

A) /L

B) 2/L

C) L/

D) L2/

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Answer:

Correct Answer: B

Solution:

  • ϕtotal=BlargeAsmall=μ04πiL/2(2sin,45o)×2

    On comparing with ϕtotal=Mi , we get M2L



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