How do transformers work?

Quote Transformers work because of the electric current. Wherever there is current, there is a magnetic field. Transformers are simple; a core with wire wrapped around it Number of Turns. Quote



Sorry what are you trying to say. This part ( core with wire wrapped around it Number of Turns) is hard to read.How do transformers work?A simple transformer consists of two coils, one coil wrapped around the outside of an inner coil. The terminal leads of one coil are connected to an alternating current source, and is called the primary coil. The terminal leads of the second coil are connected to the electrical load and is called the secondary coil. In a typical power transformer, both coils are wound around a common iron alloy core.



The energized primary coil and core forms an alternating electromagnet. The lines of magnetic flux produced by the primary, circulates through the core and induces alternating current flow in the secondary coil.



The voltage ratio between the primary coil and secondary is equal to the turns ratio (number of turns) in the primary and secondary coil. For example, if a transformer is designed to transform 480 volts applied to the primary coil, to 240 volts across the secondary coil, there will be twice as many turns in the primary coil as the secondary coil (turns ratio is 2 : 1). In the same transformer, if 50 amps flows in the secondary coil at 240 volts, 25 amps will flow in the primary coil at 480 volts. The current ratio between the primary and secondary coil therefore, is inversely proportional to the turns ratio, and the power flow through the primary coil (current multiplied by voltage) is equal to the power flow through the secondary coil.



Transformers can "step-up" voltage, in which case the number of primary turns are less than the number of secondary turns; or "step-down" voltage, in which case the number of primary turns is greater than the number of secondary turns.How do transformers work?Essentially a transformer is an inductor. An inductor is an electronic device that changes the input current from a higher wattage, to a lower wattage. Transformers reduce the power of the current... they are used to control and keep the electric power through the wire at a specific current so that it can be used as a standard for commercial/home use.

All your electronics would die immediately if there weren't transformers because the current coming from an electric plug would never be constant



Try wikipediaying it!How do transformers work?Ok the idea behind is what you said!,

When the current passed through the electric wire a magnetic flux will generate



Also when a magnetic flux crossing an electric conductive wire the current will be generated



In transformer you have both phenomena, you have one coil receive the current (Primary) and generates magnetic flux and the second coil (secondary) where an electric current generates due to the magnetic flux from the first coil



One more useful information here, based on the applied voltage to the primary coil and the required voltage at the outlet of the secondary coil you select the ration between the No. of turns for primary and the No. of turns for secondary coils, so if you need more outlet voltage you just make the No. of turns in the secondary coil higher and vise versa (by the way it is vise versa the currents relation but we use voltage because this what actually govern the transportation since we have a specific values of voltage at the usages)



But whey we need the transformer?



When we do the electrical energy transportation. from location to another we found it is very useful to increase the value of the voltage as much as we can and reduce the value of the current as much as we can, this actually reduce the energy losses during the transportation process

And when we reaches to the usage point such very high voltage and low current is not useful, simply because we need a very high value of the current to distribute it for many usage, more over the very high value of the voltage is very dangers and will destroy the electric devices.

Here we need the transformers, we need it at the beginning to increase the voltage/reduce the current and we need it at the end to act vise vers.

and we do this control by controlling the ratio between the no. of turns for each coil