advanced higher physics question? please help :)

how do you work out the direction of the force I've tried the right hand rule (I'm Scottish so I use negative current) but I can't get it to work

I know the answer is downwards towards the other wire but can someone explain why?

thanks in advance :biggrin:

(edited 9 years ago)

2010 right hand rule.PNG15.6KB

Reply 1

uberteknik

21

Original post by ah4p

how do you work out the direction of the force I've tried the right hand rule (I'm Scottish so I use negative current) but I can't get it to work

I know the answer is downwards towards the other wire but can someone explain why?

thanks in advance :biggrin:

The magnetic field around the conductor carrying a current follows Flemings Right Hand Rule.

The direction of the field lines define the magnetic north and south in the same way as the field lines circulating around a permanent magnetic.

If the current is in the same direction in both conductors, the field circulation meets in opposite directions (i.e. N and S) and the force is the same as the pole-opposite attraction of bar magnets.

Reply 2

ah4p

OP

16

Original post by uberteknik

The magnetic field around the conductor carrying a current follows Flemings Right Hand Rule.

The direction of the field lines define the magnetic north and south in the same way as the field lines circulating around a permanent magnetic.

If the current is in the same direction in both conductors, the field circulation meets in opposite directions (i.e. N and S) and the force is the same as the pole-opposite attraction of bar magnets.

Thank you vvv much for your help :smile: