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Can a static magnet induce an emf in a stationary coil of wire?
No. In order to induce an EMF, the coil and the magnet must be moving in relation to each other.
When a strong magnet is passed rapidly through a coil of wire what is true?
The magnetic field lines (the lines of force) around the magnet sweep the windings in the coil. This induces a voltage in the windings (through induction), and the voltage will try to drive current if it can. There is a bit more to this, but the essential elements are that the magentic lines of force cause voltage in the coil because there is relative motion between the field and the coil.
What is used to test permanent magnet generators?
you get it up to operating speed and see if it delivers full load voltage and current. if it has been severely overloaded the permanent magnet can be discharged causing the output to be low
The magnitude of the voltage induced in a conductor moving through a stationary magnet field depends on the?
The speed of the conductor through the magnetic field, which translates into the number of magnetic lines of force the conductor can cut per unit time, will determine the magnitude of the voltage induced in the conductor. As an additional factor, if a longer piece of wire can be moved through the magnetic field, it will induce more voltage as well. The more speed we can put on the conductor, and the more of the conductor we can move through the magnetic field, the more voltage we can induce in the conductor.
What happens when the magnet stops moving in a DC motor?
Nothing. The motor is not doing work. A voltage needs to be switched between the coils for it to go.
What is the key using a magnet and a conductor to induce a current in the conductor?
A changing magnetic field, in the conductor, can induce a voltage (and, under the correct conditions, that in turn will result in a current). In the case of a permanent magnet, either the magnet or the conductor has to move.
Can a magnet stop an electric current?
A magnet cannot stop an electric current, but it can influence the flow of the current. Moving a magnet near a wire carrying an electric current can induce a voltage in the wire, which can affect the behavior of the current.
Moving a magnet in and out of a coil of wire produces?
Moving a magnet in and out of a coil of wire induces an electric current in the wire. This phenomenon is known as electromagnetic induction and is the basis for how generators produce electricity.
Can a static magnet induce an emf in a stationary coil of wire?
No. In order to induce an EMF, the coil and the magnet must be moving in relation to each other.
What are two ways to induce a larger electric current when you move a magnet in a coil of wires?
You can induce a larger electric current by either increasing the strength of the magnetic field or increasing the speed at which the magnet moves through the coil of wires. Both of these factors contribute to the rate at which magnetic flux changes, resulting in a larger induced current in the coil.
How can you use a magnet to induce a current?
You can induce a current in a wire by moving the magnet in and out of the coil or by moving the coil near the magnet. The changing magnetic field created by the moving magnet induces a current in the wire according to Faraday's law of electromagnetic induction.
How does a magnet create electricity?
A magnet can create electricity through electromagnetic induction. When a magnet moves near a conductor, such as a wire, it creates a changing magnetic field around the conductor. This changing magnetic field induces a current to flow in the wire, generating electricity.
What is the key when using a magnet and a conductor to induce current in a conductor?
Motion
What is a magnet pole in a simple generator?
Induce current in the generator windings.
What is key when using a magnet and a conductor to induce a current in the current?
Motion
Will there be a induced current if the magnet remains at rest?
No, a stationary magnet will not induce a current in a nearby conductor. Movement or change in magnetic field is required to induce an electric current in a conductor through electromagnetic induction.
What does the combination of a magnetic field and a coiled wire create strong magnet week magnet or neutral magnet?
it creates a very strong magnet A+ users
