Mr Anderson
New Member
- Joined
- Jul 7, 2003
- Messages
- 1
Hey guys, just wondering if anyone could help me with AC generators, why do u have to use the induced force to work out the direction of the current?
Generator help!?! (1 Viewer)
- Thread starter Mr Anderson
- Start date
"Induced force"? I think you mean applied force.
The direction of the current at any moment, in an AC generator is found by using the right hand rule. If you look in your physics textbook, or search google you'll find plenty of examples & diagrams of the right hand rule.
To answer your question "why", it is because this is the nature of vector cross products. To cross multiply two vectors, you use the right hand rule. Working out the magnitude and direction of the current involves finding the vector cross product of the magnetic field and the applied force. You don't really need to worry about cross products in detail at HSC level Physics though
The direction of the current at any moment, in an AC generator is found by using the right hand rule. If you look in your physics textbook, or search google you'll find plenty of examples & diagrams of the right hand rule.
To answer your question "why", it is because this is the nature of vector cross products. To cross multiply two vectors, you use the right hand rule. Working out the magnitude and direction of the current involves finding the vector cross product of the magnetic field and the applied force. You don't really need to worry about cross products in detail at HSC level Physics though
Giant Lobster
Active Member
what do u mean by induced force? i think wogboy is right about the applied force part, though i have no idea on the rest of the stuff he says... so pro. lol
anyway, to work out the current isnt it simply using lenz law?
like, as the coil approaches the mag field u use lenz law to work out the induced current direction etc
anyway, to work out the current isnt it simply using lenz law?
like, as the coil approaches the mag field u use lenz law to work out the induced current direction etc