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A dot is used as a polarity marking. On a transformer, there should be a dot on in primary winding, and the secondary (and any other winding). You can interpret this as if current goes in the primary dot, it will go out the secondary dot; if it goes out the primary dot, it will go in the secondary dot.
What else can I help you with?
Why if the same current flows in a wire coil and a single wire loop the magnetic field inside the coil is stronger than the field inside the loop?
why, if the same current flows in a wire coil and a single loop, the magnetic field inside the coil stronger than the field inside the loop
How does an electric generator give electricity?
By rotating a magnet inside of coils of wire. The magnetic lines of flux going through the wires cause a current to flow in the wires.
Would increase the strength of an electromagnet?
More coils of wire around the magnetic material.More current through the wire in the coil.Increasing the current flowing through the wire Increasing the number of loops of wireputting a piece of iron inside the loops of wire apex :)Increasing the current flowing through the wireIncreasing the number of loops of wire
Why is the magnetic field strngth inside a current carrying loop of wire greater than a strraight section?
A looped wire would have a stronger magnetic field because a looped wire is closer to the magnet all the way aroud.
Why is the magnetic field strength greater inside a current carrying wire than about a straight section of wire?
The magnetic field strength is greater inside a current-carrying wire because the magnetic field lines produced by the current are concentrated within the wire due to the close proximity of the electric charges moving through it. In contrast, around a straight section of wire, the magnetic field lines spread out into the surrounding space, resulting in a weaker magnetic field intensity.
Can electricity be generated by turning a large magnet inside a wire coil?
Yes, electricity can be generated by moving a magnet inside a wire coil. This is known as electromagnetic induction, where the changing magnetic field induces an electric current in the wire coil.
What happens when you move a magnet back and forth inside a coil of a wire?
When you move a magnet back and forth inside a coil of wire, it induces an electric current to flow in the wire. This process is known as electromagnetic induction and is the principle behind how electric generators work. The strength of the induced current is determined by the rate of change of the magnetic field.
What does a wire with current going through it produced around it?
A wire with current flowing through it produces a magnetic field around it according to Ampere's law. The direction of this magnetic field is determined by the right-hand rule. The strength of the magnetic field is directly proportional to the current in the wire and inversely proportional to the distance from the wire.
How does an electromagnet inside a generator produce electrical energy?
An electromagnet inside a generator produces electrical energy by creating a magnetic field that interacts with a coil of wire, inducing an electric current to flow through the wire. This current is then converted into electrical energy that can be used to power devices.
Why does a bare electricity wire with current flowing though it give an electric shock and what happens if the body wet?
Electric current flows on the outside of the wire, not inside the wire. An insulated wire covers that surface where the current is flowing so that you are not touching the wire which actually carries the charge. The body has a pretty large eletrical resistance. If wet, the salts from sweating, form a more conductive surface.
What thin wire inside a light bulb is a?
Its a coiled tungsten filament.
In India we have two wires come in our homes do both carry current?
Any circuit has at least two conductors. Otherwise, by Kirchoff's current law, there would be no current, therefore no power, therefore no work. The current coming on one wire is exactly balanced by the current going out on the other wire. If there is a third wire/connection, such as a ground wire, it is possible for current to flow on that conductor as well but, usually, there is no current expected to flow on the (safety) ground conductor.
