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KingCrimson
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what is that causes the current in the wire that has a stepped up voltage * in the transformer , the wire with more coils * to have a lower current ?
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SteamKing said:Are you talking about a transformer?
Impedance. Or equivalently the conservation of energy.KingCrimson said:what is that causes the current in the wire that has a stepped up voltage * in the transformer , the wire with more coils * to have a lower current ?
or equivalently the conservation of energy.
yea i totally understand , but i mean , physics works in order to conserve energy , so there must be some mechanism that does its job such that power is always conserved , what is this mechanism exactly , impedance ?davenn said:and to elaborate on what dalespam said
power out = power in ( minus a some losses in the transformer )
Idealy, so if the power in on the primary side is 200V @ 1 Amp = 200W ---- power out on the secondary cannot be more that 200W and as stated it will be a little less.
So if you are stepping up from 200V to 400V ( ie double the voltage) you are going to halve the available current
so idealy, you will have 400V @ 0.5A = 200W
in the real world, you will have a little less than 0.5A
cheers
Dave
KingCrimson said:what is that causes the current in the wire that has a stepped up voltage * in the transformer , the wire with more coils * to have a lower current ?
Electric current is the flow of electric charge through a material, such as a wire. It is caused by the movement of electrons, which are negatively charged particles. When a voltage or potential difference is applied to a circuit, it creates an electric field that pushes the electrons through the material, resulting in current flow.
A step-up transformer is a type of electrical device that increases the voltage of an alternating current (AC) electricity supply. This is achieved by using two coils of wire, called the primary and secondary coils, that are wound around a shared iron core. When an AC current flows through the primary coil, it creates a magnetic field that induces a higher voltage in the secondary coil, resulting in a step-up in voltage and a decrease in current.
The drop in electric current after a step-up is due to the conservation of energy law. In a step-up transformer, the increase in voltage is accompanied by a decrease in current, as the total power output must stay the same. This is because the power input and output of a transformer are equal, neglecting any losses due to resistance.
Yes, there are several factors that can affect the drop in electric current after a step-up. These include the efficiency of the transformer, the quality of the materials used, and the amount of resistance in the circuit. Any losses or inefficiencies in the transformer or circuit can result in a larger drop in electric current than expected.
No, the drop in electric current after a step-up cannot be reversed. This is because it is a natural consequence of the conservation of energy law. However, the voltage and current can be changed back to their original values through a step-down transformer, which decreases the voltage and increases the current in a similar manner to a step-up transformer.