Another Magnetic Force Problem

Question

chupacabraj · Answer

The right edge of the circuit n FIGURE EX32.34 extends into 50 mT uniform magnetic ield. What are the magnitude and direction of the net force

chupacabraj · Answer

I'm able to find the magnitude using the formula: F= ILB = 2.5 x 10 ^ -4 N, I just don't know how to determine the direction. :(

random231 · Answer

do you know how to determine the direction of the cross product of two vectors?

chupacabraj · Answer

Ohhhhh ok so when the the top and bottom part, the v and b vectors are parallel so it's going to give me zero? the angle between them is zero

chupacabraj · Answer

Is the direction J?

chupacabraj · Answer

towards the  y axis?

random231 · Answer

the cross product is between l and B. B is coming out of the screen and l is in the direction of current flow

chupacabraj · Answer

How can you tell B is coming out of the screen?

random231 · Answer

https://www.quora.com/What-does-cross-x-or-a-dot-Mean-interms-of-current-direction

irishboy123 · Answer

in this one, $\vec B$ is going into the screen.  so ya see the vector tail, $\times$, as opposed to the vector head, $\bullet$ within a circle.

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