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What happens if you reverse the current flow in an electromagnet?
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The what of an electromagnet is determined by the direction of current flow?
The electromagnet (polarity) is determined by the direction of current.
The polarity of an electromagnet is determined by what?
the direction of the flow of current
What current that does not reverse its direction of flow?
direct current
How can you make an electromagnet stronger and why?
An electromagnet will maintain a charge as long as current continues to flow through it. Strengthening the charge is a matter of changing, or adjusting the components that enable the charge to flow. There are many ingredients that affect electromagnet strength. The length and width of the magnetic field, the amount of resistance the current encounters, the pulling power of the magnet itself, all determine how strong your electromagnet will be.
What factors of an electromagnet affect the strength of the magnetic field?
One of them is how many coils go around the electromagnet. also the amout of current flow< and the type of core material.
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.
The what of an electromagnet is determined by the direction of current flow?
The electromagnet (polarity) is determined by the direction of current.
The polarity of an electromagnet is determined by what?
the direction of the flow of current
In an electromagnet the wires get hot due to the flow of what?
Electric current
Voltage is pressure and current is flow what opposes flow?
Reverse current.
What current that does not reverse its direction of flow?
direct current
When would an electromagnet stop working?
An electromagnet would stop working if the electrical current flow is interrupted or if the power supply is disconnected. Additionally, if the coil overheats, it can damage the insulation and cause the electromagnet to fail.
How can you make an electromagnet stronger and why?
An electromagnet will maintain a charge as long as current continues to flow through it. Strengthening the charge is a matter of changing, or adjusting the components that enable the charge to flow. There are many ingredients that affect electromagnet strength. The length and width of the magnetic field, the amount of resistance the current encounters, the pulling power of the magnet itself, all determine how strong your electromagnet will be.
What is a Generator consisting of a coil that rotates between the electromagnet causing a current to flow in the armature?
dynamo
How can polarity of electromagnet be determined if the direction of current flow is known?
Current flow is from positive to negative. Use the left hand rule for finding the north and south poles. Grab the coil in your left hand, with your fingers wrapped around the coil in the direction of the current flow. Your thumb will then point toward the north pole of the coil. Reverse the positive - negative connections to the coil and the north - south poles will change ends. The left hand rule will still be in effect as the current will now be flowing in the reverse direction as it was in the first connection.
How can the polarity of an electromagnet be determined if the directions of current flow is known?
Current flow is from positive to negative. Use the left hand rule for finding the north and south poles. Grab the coil in your left hand, with your fingers wrapped around the coil in the direction of the current flow. Your thumb will then point toward the north pole of the coil. Reverse the positive - negative connections to the coil and the north - south poles will change ends. The left hand rule will still be in effect as the current will now be flowing in the reverse direction as it was in the first connection.
How does relay works?
Current is supplied to the electromagnet and magnitised and attract the soft iron armature. Then it closes the contact allowing the current to flow.
