- #1
sameeralord
- 662
- 3
Hello guys,
First of all I have small question with the electric motor. I just learned today in class that with electric motor loops the current is reversed in the loop after 180 degrees to continue a constant movement in one direction. But my question is why is this nessecary. If we don't have this the loop would spin back and forth. Isn't this a change in magnetic flux. So why do we have to have constant one direction rotation. Other quetsion is simply about right hand slap rule. We use the magnitic field experienced by the current in this rule don't we. I mean let's say they gave us the current. We don't then have to work out the magnetic field by the right hand grip rule and then use right hand palm rule. I'm assuming this magnetic field we work out from right hand rule is not experience by the current so we don't use that in the rule. We use the magnetic field it experiences. For example when it is inside a magnet. I hope you understood what I was saying. Anyhelp as always would be much appreciated
First of all I have small question with the electric motor. I just learned today in class that with electric motor loops the current is reversed in the loop after 180 degrees to continue a constant movement in one direction. But my question is why is this nessecary. If we don't have this the loop would spin back and forth. Isn't this a change in magnetic flux. So why do we have to have constant one direction rotation. Other quetsion is simply about right hand slap rule. We use the magnitic field experienced by the current in this rule don't we. I mean let's say they gave us the current. We don't then have to work out the magnetic field by the right hand grip rule and then use right hand palm rule. I'm assuming this magnetic field we work out from right hand rule is not experience by the current so we don't use that in the rule. We use the magnetic field it experiences. For example when it is inside a magnet. I hope you understood what I was saying. Anyhelp as always would be much appreciated