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If you have come across this site from somewhere else, please do feel free to use it as a resource. I would ask that you not post new questions as I will have to restrict the commenting function if I sense that questions from students in the course are being drowned out by others. For complete "rules" of posting see: A few groundrules.... This worked well last year, so let's keep with it.
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2 comments:
to clarify the meaning of "perpendicular distance" when talking about B-fields.
perpendicular distance is the distance from the wire to the point in the magnetic field we are interested in (the angle between this line and the wire does not have to be 90).
Please correct if needed.
Force of B-Field of one current-carrying wire on another.
Example: one horizontal wire (I1) has a current flowing to the right. Another, perpendicular to it, is above it with a current flowing upwards. The direction of the force of I1 is downward, by RHR. But, the direction of the force acting on I2 is to the right, because, though the direction of B1 is taken into consideration, the direction of the force is based on the direction of I2 and not I1. Why?
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