Electro Magnetic Induction And Alternating Currents Question 345

Question: What is the mutual inductance of a two-loop system as shown with centre separation l

Options:

A) μ0πa48l3

B) μ0πa44l3

C) μ0πa46l3

D) μ0πa42l3

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Answer:

Correct Answer: D

Solution:

Magnetic field at the location of coil (2) produced due to coil (1) B1=μo4π.2Ml3 Flux linked with coil (2)

φ2=B1A2=μo4π2i (πa2)l3×(πa2)

Also φ2=Mi
M=μoπa42l3



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