Question

Find the mutual inductance in the arrangement, when a small circular loop of wire of radius ‘R’ is placed inside a large square loop of wire of side L (L << R). The loops are coplanar and their centres coincide:

• A. M=2√2μ0R/L2
• B. M=√2μ0R/L2
• C. M=2√2μ0R2/L
• D. M=√2μ0R2/L

Answer 1

Answer: (C)

M=2√2μ0R2/L

Answer 2

The correct answer is M=2√2μ0R2/L