Direction of induced current question

In summary, a conductor placed between north and south magnets, with the poles labeled as X and Y, experienced an upward force when perpendicular to the magnetic field lines. This force induced a current, with conflicting ideas about its direction. The left hand rule suggests the current would flow from X to Y, while the right hand rule suggests it would flow in the opposite direction to oppose the lifting force.
  • #1
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Homework Statement


There is a conductor; a metal pole say, in between a north and south magnets. North on the left, south on the right.

The conductor is layed out in such a way that it is perpendicular to the magnetic field lines going from north to south. Let's label the metal poles X for the TOP of the pole Y for the bottom.

There was a force exerted on the conductor in the UP direction, lifting it.

A current was induced due to this force, which way was the current flowing?
magfield.jpg

Homework Equations


The Attempt at a Solution



From the "left hand rule" (basically if magnetic field is in one direction, the force is perpendicular to it, and the conventional current is flowing perpendicular to them both, its a pretty common rule)

Im lead to believe that the current will be flowing from X to Y.

HOWEVER a conflicting idea caught me. If the FORCE exerted to LIFT the object was in the upward direction, wouldn't that mean that the induced current would create a magnetic field to OPPOSE this change? Thus wouldn't the force actually be DOWNWARDS?

Here's a picture:
Not sure if itl'l work, thus i included a description above
 
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  • #2
Left hand rule is used to find the direction of force on a current carrying conductor in a magnetic field. For the direction of induce emf, you have to use "right hand rule".
 
  • #3
I would like to clarify that the direction of induced current is dependent on the direction of the magnetic field and the motion of the conductor. In this scenario, the conductor is perpendicular to the magnetic field, and the force is exerted in the upward direction. According to the left hand rule, the current would flow from X to Y. This is because the force is perpendicular to the magnetic field, and the induced current would create a magnetic field that opposes this change. Therefore, the force would be downwards, in the opposite direction of the induced current.

However, it is important to note that the direction of the induced current can also depend on the direction of motion of the conductor. If the conductor was moving downwards, the direction of the induced current would be different. It is crucial to consider all these factors while determining the direction of induced current. Additionally, the homework statement does not provide any information about the motion of the conductor, so it is not possible to accurately determine the direction of the induced current in this scenario.
 

1. What is induced current?

Induced current is an electric current that is created by a changing magnetic field. It is also known as electromagnetic induction and is the basis for many electrical devices and technologies.

2. How is induced current created?

Induced current is created when a conductor is placed in a changing magnetic field. The magnetic field induces a voltage in the conductor, which in turn causes a flow of electrons or current.

3. Does the direction of the induced current matter?

Yes, the direction of the induced current is important as it determines the direction of the magnetic force and the resulting motion of the conductor. The direction of the induced current is always perpendicular to the direction of the changing magnetic field.

4. How can the direction of induced current be determined?

The direction of induced current can be determined by using the right-hand rule. If the thumb of the right hand points in the direction of the changing magnetic field, the fingers will curl in the direction of the induced current.

5. What factors affect the direction of induced current?

The direction of induced current is affected by the strength and direction of the magnetic field, the speed at which the magnetic field changes, and the orientation and shape of the conductor in the magnetic field.

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