- #1
Mspike6
- 63
- 0
Hi..
I have 2 questions ( simple once i assure you :D) in Electromagntics.
1) ""A 0.120 m long copper wire has mass of 9.02 g and is carrying a current of 5.10 A perpendicular to a uniform magnetic field. This apparatus is placed in a strong magnetic field and the wire is found to levitate. Calculate the magnetic field Strength (B)"
Solution :
I actually solved this one right,
Fm=fg
I L B = Mg
B= mg/I L
What i don't understand is, why do we say that Fm=Fg if the wire Levitate ? i mean... if the why Levitate, it make sense that Fm is bigger (in magnitude) then Fg... why do we equalize them ??
My second questions
"Would two parallel wires carrying a current in opposite directions repel or attract one another?"
I think they would repel. but i don't know why :P
Thank, any help is really appreciated.
I have 2 questions ( simple once i assure you :D) in Electromagntics.
1) ""A 0.120 m long copper wire has mass of 9.02 g and is carrying a current of 5.10 A perpendicular to a uniform magnetic field. This apparatus is placed in a strong magnetic field and the wire is found to levitate. Calculate the magnetic field Strength (B)"
Solution :
I actually solved this one right,
Fm=fg
I L B = Mg
B= mg/I L
What i don't understand is, why do we say that Fm=Fg if the wire Levitate ? i mean... if the why Levitate, it make sense that Fm is bigger (in magnitude) then Fg... why do we equalize them ??
My second questions
"Would two parallel wires carrying a current in opposite directions repel or attract one another?"
I think they would repel. but i don't know why :P
Thank, any help is really appreciated.