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Statement of a problem № 3851

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A long straight wire carries a current of 20 A, as shown in Fig. 13.15. A rectangular coil with two sides parallel to the straight wire has sides 5 and 10 cm with the near side a distance 2 cm from the wire. The coil carries a current of 5 A. (i) Find the force on each segment of the rectangular coil due to the current in the long straight wire. (ii) What is the net force on the coil?

Solution:
A long straight wire carries a current of 20 A, as shown in Fig. 13.15. A  recta

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