A rectangular loop of wire is placed next to a straight wire, as shown in Fig. 20–55. There is a current of 3.5 A in both wires. Determine the magnitude and direction of the net force on the loop.
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can you check your calculations because I get my answer in the order of 5.0437x10^-7
Hi merkinthedark, I ran the final numbers shown in the video through the calculator again and confirmed the answer, so please let me know if you find any specific error. It looks fine so far.
Best,
Mr. Dychko
What is the value of L (length)? is it the total length of the loop only? The value of .1 m seem like just the value of one side
Hi d.giraldo31, you're totally right: 0.1 m is only the length of the sides of the rectangle parallel to the wire. These two sides are the only ones that are important for the calculation of net force. The two other edges of the rectangle on the sides experience equal magnitude force that are opposite in direction so these forces cancel. The forces on the two parallel segments, on the other hand, while in opposite directions, are not of equal magnitude. The attractive force on the top segment exceeds the repulsion of the bottom segment.
All the best,
Shaun
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