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A magnet slows down when moving through a copper tube because the magnetic field generated by the moving magnet induces electric currents in the copper tube, creating an opposing magnetic field that resists the motion of the magnet. This resistance, known as electromagnetic induction, causes the magnet to slow down as it moves through the tube.
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Why does a magnet fall slower in a copper pipe?
A magnet falls slower in a copper pipe because the magnetic field generated by the moving magnet induces an electric current in the copper pipe, creating a magnetic field that opposes the magnet's motion, causing resistance and slowing it down.
How does the phenomenon of a magnet falling through a copper tube demonstrate the principles of electromagnetic induction?
When a magnet falls through a copper tube, it creates a changing magnetic field. This changing magnetic field induces an electric current in the copper tube through electromagnetic induction. The induced current creates a magnetic field that opposes the motion of the magnet, causing it to slow down and demonstrating the principles of electromagnetic induction.
When you drive down the highway you are moving through space what else are you moving through?
When driving down the highway, you are moving through time, as time is continually passing regardless of your speed. Additionally, you are also moving through an ever-changing environment, encountering different landscapes, weather conditions, and other vehicles along the way.
Why does the acceleration of a magnet decrease while falling through a coil?
Because as it falls through the coil it causes an electric current to flow in the coil. The energy for this electricity comes from the kinetic (the movement ie the falling) energy of the magnet. Thus as it falls through the coil it slows down as a little the energy of the falling movement is turned into electricity.
A force that slows down moving objects?
Friction is the force that slows down moving objects by opposing their motion through contact between surfaces. This resistance arises due to the contact between the surfaces of the moving object and the surface on which it is moving.
Why does a magnet fall slower in a copper pipe?
A magnet falls slower in a copper pipe because the magnetic field generated by the moving magnet induces an electric current in the copper pipe, creating a magnetic field that opposes the magnet's motion, causing resistance and slowing it down.
How does the phenomenon of a magnet falling through a copper tube demonstrate the principles of electromagnetic induction?
When a magnet falls through a copper tube, it creates a changing magnetic field. This changing magnetic field induces an electric current in the copper tube through electromagnetic induction. The induced current creates a magnetic field that opposes the motion of the magnet, causing it to slow down and demonstrating the principles of electromagnetic induction.
Why will a bar magnet fall slower and reach terminal velocity in a vertical copper or aluminum tube but not in a cardboard tube?
This is an aspect of Lenz's law. Copper is a non magnetic substance but is a conductor. When a magnet moves through the copper pipe it induces a current known as eddy currents. There will be a magnetic field created by the current. According to Lenz's law it will oppose the motion or change which is producing it. This results in an attractive force between the magnet and the copper pipe in which a current is induced by the falling magnet. The plastic rod is not conducting and hence it will not affect the fall.
Why do speaker have magnet?
The magnet is part of the 'motor' of the sub. The coil inside the magnet has alternating current running through it. The coil acts as an electromagnet and pulls itself up or pushes itself down moving the cone of the speaker. The bigger the magnet, the stronger the magnetic field inside the speaker where the coil is.
What are the two ways to increase the time of fall of a magnet through a tube?
If the tube is a conductor, the first way involving magnetism that will slow the magnet down is competely natural. When the magnet passes through a conductor, the changing magnetic field will induce a current in the conducting tube opposing the velocity of the magnet. This will cause the magnet to slow down through the length of the tube. The classic demonstration of this involves a copper tube and a small, round magnet. The second way involving magnetism is to wrap the tube in a coil of wire, creating a solenoid. After you have wrapped the tube, if you put a current that is counter-clockwise through the solenoid, the magnet will slow down because the solenoid creates a magnetic field that is directed upward. With this method, you could change the direction of the current and the magnet will fall faster instead.
When a magnet is dropped inside a copper tube its exit is delayed by a few minutes why?
This effect has nothing to do with the magnet sticking to the side of the copper. Magnets will only stick to ferromagnetic substances such as iron and steel, not copper. The actual physics of this experiment is more subtle. The magnet falling down the tube results in a changing magnetic field within the copper tube. This changing magnetic field produces a current within the tube. That current creates a new magnetic field within the tube which slows down the magnet.
Explain the working principle of electromagnetic induction is used to make generators?
In an induction motor, a rotating magnetic field is sent sideways through the walls of a copper cylinder. The field cuts the copper, generating a current in it, and also a powerful magnetic field, and the magnetic field in the copper repels the rotating field. This 'pushes' the copper forward, making the coper try to move. If the copper cylinder is able to spin freely, it will coast along at a slightly slower speed than the rotating field, as the moving magnetic field has to keep 'cutting' the copper to create the other magnetic field. In this case the rotating cylinder is not doing any work, since no energy is being used to drive a load. It's just coasting frictionlessly. If we place a friction load upon the motor shaft, (add a washing machine,) then the copper cylinder will slow down in the magnetic field moving through it. In this case the magnetic field is cuts the copper faster, generates more current and flux, and pushes the copper along harder, so the device becomes a motor. Energy from the rotating magnetic field sets up an opposite field in the copper cylinder, and drives it forward. If instead we *drive* the copper cylinder forward, making it spin at a faster speed than the moving magnetic field, then the copper cylinder will push the field forward, creating a rotating field in the copper, and this generates electrical energy in the coils. So for a 2-pole motor running at 60Hz, it becomes a motor if it spins slower than 3600RPM, and it becomes a generator if it's spun faster. Here's a second way to visualize things: the rotating copper cylinder generates its own trapped magnetic field. This means that the copper cylinder is itself a magnet. If this magnet is allowed to spin freely, then it will turn at exactly the same rate as the magnetic field from the coils. Then if we grab the motor shaft to try to slow down the spinning "copper magnet," the poles of the magnet within the copper will lag behind the moving magnetic poles from the coils, and the coils will pull the copper strongly forward. The "copper magnet" doesn't need to slow down, but instead it will suck energy out of the coils as its gets dragged forward by the moving poles from the coils. On the other hand, if we try to spin the "copper magnet," it won't turn faster. Instead its poles will get ahead of the moving poles of the coils, and it will inject electrical energy into them, and drive the mains with this energy. In other words a moving magnet can generate a current in a nearby coil, *OR* a current in a coil can force a nearby magnet to start moving. All motors are generators and all generators are motors. It just depends on which side is driving forward and which side is being dragged along. If induction motors and generators make your brain hurt, just remember that there's a good reason for this. They weren't invented by a bunch of engineers. Instead they sprang from the twisted mind of Nikola Tesla, who no doubt could ride along with his mental squirrel-cage rotor while seeing how the fields and currents behaved.
How much gauge copper wire is required to generate 1amp current with ordinary magnet's up- down moment?
Your question is an engineering question. An answer depends on how much magnetic power the magnet actually has, how many lines of magnetic flux it produces, and through how many of those lines of flux the conductor passes.
Dropping or heating a magnet will not weaken it because the domains will stay in alignment?
When you drop or heat a magnet, the domains may temporarily lose alignment, but once the magnet stops moving or cools down, the domains will realign and the magnet's strength will return. Dropping or heating a magnet will not permanently weaken it.
In which process of water moving down through the soil called?
The process of water moving down through the soil is called infiltration. It refers to the movement of water from the ground surface into the soil.
When you drive down the highway you are moving through space what else are you moving through?
When driving down the highway, you are moving through time, as time is continually passing regardless of your speed. Additionally, you are also moving through an ever-changing environment, encountering different landscapes, weather conditions, and other vehicles along the way.
How can you tell if a 1948 dime is all silver or a mix with copper?
You can check the composition of a 1948 dime using a magnet. If the dime is attracted to the magnet, it likely contains iron and is not pure silver. A pure silver dime will not be attracted to a magnet.
