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anonymous
 one year ago
A 10m wire that carries a current of 3A from east to west is placed in a magnetic field of 0.0004T running from south to north. Find the size and direction of the magnetic force on the wire.
**how do we find this? :/ Thanks!!:)
anonymous
 one year ago
A 10m wire that carries a current of 3A from east to west is placed in a magnetic field of 0.0004T running from south to north. Find the size and direction of the magnetic force on the wire. **how do we find this? :/ Thanks!!:)

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Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1the situation described into your problem is: dw:1433612353948:dw

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1since magnetic field and current are perpendicular each other, then the magnitude of the magnetic force is: \[\Large F = ILB\] where L = 10 meters

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1namely: \[\Large F = ILB = 3 \times 10 \times 4 \times {10^{  4}}\]

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1yes! correct the unit of measure is Newtons, so we have: F= 0.012 Newtons

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0is that the size of the force? :/

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1yes! now the direction is given by the rule of product vector, so the orientation of the magnetic force is like below: dw:1433612811550:dw namely the vector F is perpendicular to both current and magnetic field, and it is oriented inward of the drawing plane

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok! so it is going south?

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1no, it is going inward of the drawing plane, here is a 3D view: dw:1433613109921:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ohh so it is going northeast?

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1no, that is a 3D view not a 2D view

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ohh i am confused then haha what direction is that ? :/

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1it is perpendicular with respect to NorthSouth direction and it also is perpendicular with respect to WestEast direction

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ohh okay :/ wow confusing hahah :P thank you!! so this problem is complete?
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