All Flashcards
What happens when magnetic flux through a loop increases?
The induced magnetic field points in the opposite direction to the applied field.
What happens when magnetic flux through a loop decreases?
The induced magnetic field points in the same direction as the applied field.
What is the effect of a changing magnetic flux?
It induces an electromotive force (EMF) in a nearby conductor.
What causes an induced current?
An induced EMF in a closed circuit.
What is the effect of an induced current?
It creates its own magnetic field that opposes the change in the original magnetic flux.
What is the effect of moving a conductor through a magnetic field?
It induces a current in the conductor.
What happens when magnetic flux through a loop increases?
An induced current is generated, creating a magnetic field opposing the increase.
What is the effect of moving a conductor through a magnetic field?
An electromotive force (EMF) is induced in the conductor.
What is the effect of a changing magnetic field near a conductor?
It induces a voltage (EMF) in the conductor.
What happens when the magnetic flux is decreasing?
The induced magnetic field points in the same direction as the applied field.
What happens when a conductor moves through a magnetic field in magnetic braking?
Induced currents dissipate kinetic energy as heat, slowing down the object.
What are the steps to determine the direction of induced current using Lenz's Law?
- Determine if the magnetic flux is increasing or decreasing. 2. Determine the direction of the induced magnetic field (opposing the change). 3. Use the right-hand rule to find the direction of the induced current.
What are the steps for using the right-hand rule to find the direction of induced current?
- Point your thumb in the direction of the current. 2. Curl your fingers. 3. Your fingers point in the direction of the magnetic field.