The magnetic moment of the coil is p = 0.05A * m ^ 2. Determine the radius of the loop if the current in the loop is I = 10A.

In our case, the direction of the moment does not matter, so you can use the formula to determine the absolute value of the magnetic moment of the turn:
P = IS,
where I is the current in the loop, S is the area of the loop.
If the turn has the form of a ring, then S = πr²
Substitute the values:
0.05 A * m² = 10 A * πr²;
r² = 0.05 A * m² / (3.14 * 10 A) = 0.005 m² / 3.14 = 0.001592 m² ≈ 0.0016 m²;
We extract the root from both parts:
r = 0.04 m.
Answer: 0.04 m.



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