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True or false an electromagnet must include a coil of wire?
WinnieRenee
A magnetic field is induced by pushing current though a wire; so you could consider a straight wire an electromagnet. Using more coils will strenghten the electromagnet, though, so a straight wire version will be very weak comparitively.
Wiki User
∙ 14y ago
Wiki User
∙ 9y agoTrue, as Michael Faraday discovered when a coil of wire has a Magnetic rod passed thru it will induct voltage. Depending on the wraps of wire and strength of Magnet will determine the strength of voltage,
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The value of inductance for a coil with an air core is higher than the same coil with a ferrite core True or False?
false
What happens to the electromagnet when the circuit is closed?
An electromagnet if formed by pushing current through a coil. If the circuit is truly open, current will cease to flow, thus no electromagnet.
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 is the rotating coil in an electric motor called?
The part that rotates inside of an electric motor is called the rotor.
How an analog volt meter works?
The meter movement has a current flowing through a coil. That coil is on a magnet. The electromagnet with the needle moves according to the current flow. That flow is established by resistive ladders inside the meter.
The value of inductance for a coil with an air core is higher than the same coil with a ferrite core True or False?
false
How does a coil act?
a coil acts as an electromagnet.
What is the relationship between the stength of an electromagnet and the number of turns in the coil?
As the number of turns in the coil increases, the strength of the electromagnet increases.
What are the arrangement of moving magnets and wire coil called?
electromagnet
Which of the following statement about electromagnets is true?
Electromagnets are temporary magnets that are created when electric current flows through a wire coil. The strength of an electromagnet can be increased by increasing the number of turns in the wire coil, increasing the current flowing through the coil, or by using a ferromagnetic core material.
What does a electromagnet have that a bar magnet does not have?
The bar magnet and the electromagnet act identical. The difference being a electromagnet is a coil of wire that has a power source connect to both ends, this energizes the coil with an electromagnetic field.
How can you strengthen an electromagnet?
make an electromagnet stronger by doing these things: * wrapping the coil around an iron core * adding more turns to the coil * increasing the current flowing through the coil.
Strong temporary magnet formed when a current is passed through a coil of wire?
A magnetic field.
What type of magnet is created when electric current flows through a coil wire?
electromagnet
Is the core of an electromagnet a piece of steel in the center of the coil?
no
A coil of wire with an electric current in it is called?
electromagnet
Two ways to increase the strength of an electromagnet?
-- Increase the current (amperes) flowing through the coil of wire that surrounds the electromagnet. -- Increase the number of 'turns' of wire in the coil.
