Calculate Force and Direction of Magnetic Field on a Wire

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To calculate the force on a wire in a magnetic field, the formula F = BIL is used, where F is the force, B is the magnetic induction, I is the current, and L is the length of the wire. For a 3.0 cm wire in a 0.40 T magnetic field with a 5.0 A current, the force calculated is 0.06 N, but the direction remains unclear. In a separate scenario, a 1.5 m wire experiences a force of 1.5 N, leading to a magnetic induction calculation of 20 T when the current is 0.050 A. If the wire is rotated 90 degrees, the force is questioned, with suggestions that it may be zero due to the loss of perpendicular alignment. Understanding the direction of force is crucial and depends on the orientation of the wire relative to the magnetic field.
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Homework Statement


A wire 3.0 cm long lies perpendicular to a magnetic field with a magnetic induction of 0.40 T. Calculate the force on the wire if the current is 5.0 A. What is the direction of force?


Homework Equations



F=BIL

The Attempt at a Solution



I found the force to be .06 N but I have no idea how to find the direction.



Homework Statement


A wire 1.5 m long is at right angles to a magnetic field.

a. What is the magnetic induction of the field if the force on the wire is 1.5 N and the current is 0.050 A?

b. What is the force on the wire if it is rotated 90 degrees?

Homework Equations



F=BIL

The Attempt at a Solution



a. The answer is 20 Teslas.

b. I have no idea? Would it be zero because they are not perpendicular any more?
 
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I have no idea how to find the direction.
Perpendicular to the plane containing wire and magnetic field.
I have no idea? Would it be zero because they are not perpendicular any more?
It depends upon how the wire is rotated.
 

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