Given:
Radius of first loop, a = 10 cm = 0.10 m
Current passing through first loop, I = 2 A
Using Biot-Savart Law, the magnetic field at the center of the loop is given by:
\[ B_1 = \frac{\mu_0 I}{2a} \]
Plugging in the values:
\[ B_1 = \frac{4\pi \times
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