What affects the direction of the induced current?
An induced current has a direction such that the magnetic field due to the induced current opposes the change in the magnetic flux that induces the current. for the given loop (this vector is always normal to the loop!)
In what direction does the induced current flow?
counterclockwise
The induced current will be counterclockwise (ccw). As the bar moves upward through the constant magnetic field region, the area of the loop decreases, so the flux through the loop decreases. By Lenz’s law, any induced current will tend to oppose the decrease.
Does induced emf have a direction?
When flux changes, an emf is induced according to Faraday’s law of induction. Figure 1. (b) Lenz’s law gives the directions of the induced field and current, and the polarity of the induced emf. Since the flux is increasing, the induced field is in the opposite direction, or out of the page.
Is induced emf same direction as induced current?
When there is an induced emf then a force will act on a charge and the direction of that force on a positive charge will give you the direction of the induced (conventional) current if there is one.
What induces a current?
A current can be induced in a conducting loop if it is exposed to a changing magnetic field. A current can be induced in a conducting loop if it is exposed to a changing magnetic field.
How to find the direction of the induced current?
The induced magnetic field is in a direction that tends to cancel out the change in the magnetic field in the loop of wire. So, you can use the Right Hand Rule to find the direction of the induced current by remembering that the induced magnetic field is opposite in direction to the change in the magnetic field.
How are induced current and magnetic fields the same?
Both can be understood in the same way. On the other hand, we can also change the magnetic flux by pushing a loop of wire into a magnetic field. This confuses me. Two vertical lines are cutting across the field. But since they are connected, the induced current, I conjecture, would cancel each other.
How does the ammeter respond to an induced current?
Notice that the response of the ammeter also varies depending on how quickly you move the coil shape slider. Since the strength of an induced current depends in part on the rate of change in the magnetic flux, changing the coil shape very quickly produces higher readings on the Ammeter than when the coil is adjusted slowly.
How is the direction of induced current in a solenoid determined?
We would use a setup as in this sketch to do the test: In the case where a north pole is brought towards the solenoid the current will flow so that a north pole is established at the end of the solenoid closest to the approaching magnet to repel it (verify using the Right Hand Rule):