Question: A wire is formed so as to make a circular loop connecting two long, straight sections as shown in Figure P20.72. If the radius of

A wire is formed so as to make a circular loop connecting two long, straight sections as shown in Figure P20.72. If the radius of the loop is R = 20 cm and the wire carries current I = 2.4 A, what are the magnitude and direction of the magnetic field at the center of the loop?

Figure P20:72

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