A current carrying wire is bent into the shape shown in the figure. The two circular ares have the same origin, O, and the inner has radius a = 2.5 mm and the outer has radius 2a. Both ares have central angles of 270°. A current of 1.5 mA flows through the wire as shown. What is the magnitude and direction of the magnetic field, caused by the current, at O? It is not necessary to derive any expressions from the Biot-Savart law, but you must consider the whole wire.
A current carrying wire is bent into the shape shown in the figure. The two circular ares have the same origin, O, and the inner has radius a = 2.5 mm and the outer has radius 2a. Both ares have central angles of 270°. A current of 1.5 mA flows through the wire as shown. What is the magnitude and direction of the magnetic field, caused by the current, at O? It is not necessary to derive any expressions from the Biot-Savart law, but you must consider the whole wire.
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Transcribed Image Text:8. A current carrying wire is bent into the shape shown in the figure. The two circular arcs
have the same origin, O, and the inner has radius a = 2.5 mm and the outer has radius
2a. Both arcs have central angles of 270°. A current of 1.5 mA flows through the wire as
shown. What is the magnitude and direction of the magnetic field, caused by the current,
at O? It is not necessary to derive any expressions from the Biot-Savart law, but you must
consider the whole wire.
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