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What happens when you reverse the current in an electromagnet?
The magnetic field reverses direction.
Can a dc electric field produce magnetic field?
Yes. A steady current will produce a magnetic field, B= uI/r
When a current is passed through a coil of wire what forms Is it A. an electromagnet or B. A commutator?
a magnetic field
What causes a magnetic field to be set up around a wire?
Passing an electric current through a wire will produce an external magnetic field. This is because the electrons have spin and this spin is what produces the field. Spinning electrons (of certain characteristics) also produce the magnetic field of permanent magnets. And no spinning electrons, no magnetic field.
Is there a magnetic field around current carrying conductors?
yes.magnetic field present around the conductor.current and magnetic fields are inter related..with current we can produce magnetic field and vice versa
When does an electromagnet produce a field?
An electromagnet produces a magnetic field when current is passed through it wire winding.
How is an electromagnet wave generated?
We produce electric field and magnetic field. If we change the electric field with time (so magnetic field alse change), required frequency, then we produce electromagnetic wave.
What is the purpose for an electromagnet in a simple doorbell?
to produce magnetic field to move the piston of the doorbell
What is the magnetic field of an electromagnet similar to?
The magnetic field of an electromagnet is similar to the magnetic field of a permanent magnet. Both exhibit magnetic properties and can attract or repel other magnetic materials. The strength of the magnetic field of an electromagnet can be controlled by adjusting the electrical current flowing through it.
What device can be used to determine the direction of the magnetic field in the electromagnet?
A compass can be used to determine the direction of the magnetic field in an electromagnet. The needle of the compass will align along the direction of the magnetic field lines produced by the electromagnet.
Why does a compass move when it gets near an electromagnet?
When a compass gets near an electromagnet, the magnetic field produced by the electromagnet interferes with the Earth's magnetic field, causing the compass needle to align with the electromagnet's field instead. This phenomenon is known as magnetic deflection.
Does electromagnet produce electricity or use electricity?
An electromagnet uses electricity to generate a magnetic field when current runs through the coil of wire. It does not produce electricity like a generator would.
What does a electromagnet create?
An electromagnet creates a magnetic field when an electric current passes through a coil of wire, which magnetizes the core of the electromagnet. This magnetic field allows the electromagnet to attract or repel other objects that contain iron, nickel, or cobalt.
What must happen for an electromagnet to have a magnetic field?
An electromagnet must have a current flowing through its coil of wire in order to generate a magnetic field. When an electric current passes through the coil, it creates a magnetic field around the electromagnet.
What happens when you turn on the current in an electromagnet?
When you turn on the current in an electromagnet, it induces a magnetic field around the magnet. This magnetic field allows the electromagnet to attract or repel other magnetic objects or influence nearby currents. The strength of the magnetic field can be adjusted by changing the amount of current flowing through the electromagnet.
What do the parts of an electromagnet do?
An electromagnet requires only two parts, a core of ferro-magnetic material and wires winding around it. The wires magnetize the core when current flows through them, and the core then creates the magnetic field which the electromagnet is intended to produce.
What energy transformations occur in a electromagnet?
Electrical energy is converted into magnetic energy in an electromagnet. When current flows through the coil of wire in the electromagnet, a magnetic field is created. This magnetic field can then exert a force on nearby magnetic materials.
