Recent content by BMan

Ah! I see now. Ok ok. That is what I didn't understand. I forgot all about the across the field thing, I was thinking into and out of the field, like gravity. Ok, I am convinced then. So motion creates the current. No motion, no current. Thank you everyone. (I can be stubborn sometimes...

Ok, this is what I'm saying: The "moving wire is the cause of current induced in a loop in a non-changing magnetic field" explanation that jdavel came up with can explain why my circuit will not create a current. But the explanation is not consistent with the generators and perpendicular loop...

Relative motion between the loop and the magnet... but what about a generator? The net movement relative to the magnetic field is 0. Consider a 1/8th turn of the loop. Half of the loop went downfield, the other half went upfield. Net movement = 0. Another example. If a loop is...

Hmm. Well if a current is not generated, then there needs to be a disclaimer about Area in that formula. I thought for sure a change in Area would lead to a current. Suppose the situation was somewhat reversed: The external magnetic field is removed. The circuit is connected to a battery...

That's what I thought. But then the current can also be caused by a change in the magnetic flux through the loop. (i.e. increasing or decreasing the strength of the magnet) And also, the current can be caused by a change in the area of the loop, which can be thought of as moving free...

My mistake. The entire circuit is in a magnetic field perpendiclar to the cicuit. Thank you for pointing that out. Do you have any ideas of whether or not a current is generated?

I have a question: Suppose I have a circuit with a resistor connected to a loop. The circuit is in an electric field. The loop has a 3 way switch that can close the loop regularly, or close the loop by connecting to wire that connects to a different part of the loop. My question is that if...