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How can you show that electricity creates a magnetic field in an electromagnet?
When electric current flows through a coil of wire in an electromagnet, it generates a magnetic field around the coil. This is known as electromagnetism and demonstrates the relationship between electricity and magnetism as described by Maxwell's equations. The strength of the magnetic field produced by the electromagnet is directly proportional to the amount of current flowing through the coil.
Why there is an induce current in a coil when a coil is compressed in a magnetic field?
compressing a coil in a magnetic field means that there is a relative movement of the the said coil existing in a magnetic field, hence current will be induced. induction law.Another Answer'Current' is not induced into a coil. It's voltagethat's induced; if the coil forms a closed loop, then current will flow; if there is no closed loop, then no current will flow.The induced voltage results from either a change in current through the coil, or from the relative movement between the coil and an external magnetic field.
What is turned in a galvanometer?
A galvanometer measures small electric currents and it typically consists of a coil of wire suspended in a magnetic field. When current flows through the coil, it generates a magnetic field that interacts with the external magnetic field, causing the coil to rotate, which is then indicated on a scale to show the current strength.
What three features do magnetic field lines show?
Magnetic field lines show the direction of the magnetic field, the magnitude of the magnetic field (closeness of the lines), and the shape of the magnetic field around a magnet or current-carrying wire.
What do magnetic field line show?
Magnetic field lines show the direction in which a magnetic north pole would be attracted. They provide a visual representation of the strength and direction of the magnetic field in a given space.
How does changing current affect the magnetic force on a wire suspended in a magnetic field?
Current passing through a wire in a magnetic field creates its own magnetic force in some direction. If you increase the current, force will be increased. If the direction of current is changed, direction of force will also be reversed. Direction of current is found by applying right hand rule.
Why will chalk dust sprinkled on a plastic sheet placed over a bar magnet NOT show the shape of the magnetic field?
Simple: chalk dust has no magnetic properties whatsoever, and is an insulator. As such, the magnetic field will flow right past it as if it weren't there, so it cannot position itself accordingly.
What can iron fillings be used to show?
to show the direction of a magnetic field
What causes the magnetic compass to react with a magnet?
The compass needle is a small bar magnet balanced on a pin. It swivels freely on this balance point. This is how it can align with the magnetic field of the Earth to show what direction magnetic north is. When you introduce another magnetic field, like from a magnet in close proximity, the needle will align with these local fields since their field strength is stronger than Earth's magnetic field - locally.
What is the list for the characteristics of a magnetic field produced by a current?
A magnetic field is a change in energy within a volume of space. A magnetograph can be created by placing a piece of paper over a magnet and sprinkling the paper with iron filings. The particles align themselves with the lines of magnetic force produced by the magnet. The magnetic lines of force show where the magnetic field exits the material at one pole and reenters the material at another pole along the length of the magnet. It should be noted that the magnetic lines of force exist in three dimensions but are only seen in two dimensions in the image.
Which is true of magnetic field lines but not electric field lines?
they show wich way iron shavings would align themselves They always make closed loops. Electric field lines can either form closed loops or they can start and finish on isolated electric charges. Magnetic field lines always only form closed loops.
How can you use iron fillings to show the shape of a magnetic field?
You can sprinkle iron fillings near a magnet to observe the pattern of the magnetic field. The iron fillings will align along the magnetic field lines, making the shape of the magnetic field visible. This technique helps visualize the direction and strength of the magnetic field.
