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What flows through a circuit and causes a magnetic field?
An electric current flowing through a circuit causes a magnetic field. This is due to the movement of electric charges, usually electrons, in the circuit. The magnetic field produced is perpendicular to the direction of the current flow.
How does a changing magnetic field produce an electric field according to electromagnetic theory?
According to electromagnetic theory, a changing magnetic field induces an electric field. This phenomenon is known as electromagnetic induction, where the changing magnetic field creates a force that causes electrons to move, generating an electric current.
How does a magnetic field make a electic current?
A changing magnetic field induces an electric current in a conductor, according to Faraday's law of electromagnetic induction. This is because the changing magnetic field creates an electric field that causes charges to move within the conductor, generating an electric current.
What causes a electromagnetic wave?
An electromagnetic wave is caused by the vibration of electric and magnetic fields propagating through space. When an electric charge accelerates, it creates a changing electric field, which in turn generates a magnetic field. The changing magnetic field then creates a changing electric field, and this cyclical process results in the formation of an electromagnetic wave.
What must happen for an electromagnet to have a magnetc field?
An electromagnet must have an electric current passing through its coils to generate a magnetic field. The magnetic field is created as the electric current causes the alignment of the magnetic domains within the core material of the electromagnet, creating a magnetic field around the coil.
In this electric motor an electric current causes the coil to rotate changing?
In this electric motor, an electric current flowing through the coil interacts with the magnetic field, generating a force that causes the coil to rotate. This rotation changes the direction of the magnetic field around the coil, which in turn causes the coil to keep rotating in the same direction.
In an electric motor a magnetic field causes what to spin?
The rotor (which is some type of magnet).
How does electricity create a magnetic field?
When electricity flows through a wire, it creates a magnetic field around the wire. This is because the moving electric charges generate a force that causes the magnetic field to form.
What are two fields surround a moving electric charge?
A moving electric charge will produce a magnetic field.A moving electric charge will produce a magnetic field.A moving electric charge will produce a magnetic field.A moving electric charge will produce a magnetic field.
What is a magnetic field will be produced at some point in space if the electric field at the point?
As far as the electric field is stationary then no magnetic field. But when electric field is moving at a uniform speed then a magnetic field will be produced. This is what we call Lorentz magnetic field.
What part of an electric fan makes a magnetic field?
The motor in an electric fan creates a magnetic field when an electric current passes through the coils of wire within the motor. The interaction between this magnetic field and the permanent magnets in the motor causes the fan blades to rotate and produce airflow.
Why is light in the electromagnetic spectrum Is light a type of electromagnetic radiation But how does that work Light is not magnetic or is it?
Part of the electromagnetic spectrum can be detected by eye, and we call that bit "light". The thing about electromagnetic radiation is that a varying magnetic field causes a (varying) electric field (that's how power stations make electric current) and a varying electric field causes a (varying) magnetic field. So electromagnetic radiation is what you get when a varying electric field creates a varying magnetic field which in turn contributes the varying electric field. The whole thing then appears as bundled varying electric and magnetic field wave system which propagates at the velocity of light, That is why it is called electromagnetic. There are no magnetic poles or electric charges in it, and it can travel through a vacuum.
