Final answer:
The magnetic field at the center of a circular loop can be calculated using the formula B = μ0 * I / (2 * r), where B is the magnetic field, μ0 is the permeability of free space, I is the current, and r is the radius. Using the given diameter of 1.20 cm, the radius can be calculated as 0.006 m.
Step-by-step explanation:
The magnetic field at the center of a circular loop can be calculated using the formula:
B = μ0 * I / (2 * r)
where B is the magnetic field, μ0 is the permeability of free space (a constant), I is the current through the loop, and r is the radius of the loop. In this case, the diameter of the loop is given as 1.20 cm, so the radius can be calculated as half of that value:
r = 0.6 cm = 0.006 m
Substituting the values into the formula:
B = (4π×10-7 T·m/A) * I / (2 * 0.006 m)
Assuming the current through the loop is given, the magnetic field at the center of the loop can be calculated.