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Why is electrical power transmitted in high voltage and not high current?
Wiki User
∙ 12y ago
For any given load, the higher the supply voltage, the lower the resulting load current. A lower load current results in an acceptable voltage drop along the line, that conductors with lower cross-sectional areas can be utilised, and line losses are minimised. So high voltages are essential for energy (not 'power') transmission.
Wiki User
∙ 12y ago
Wiki User
∙ 9y agoThe wire used to transmit the electricity has a specific resistance per unit length. Since power is equivalent to I^2 * R, the power loss in the wire becomes greater as the current increases, which results in less energy to sell.
It's more economical to transmit power at very high voltages because of this energy loss.
Answer
For any given load, the higher the supply voltage, the lower the load current. It's necessary, therefore, to transmit/distribute electrical energy at high voltages to minimise voltage drop along the cable, to reduce line losses, and to enable cables of practical sizes to be used. T
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What are short fast transfers of electrical voltage current or energy?
Power Spikes
Power is transmitted at high voltages because the corresponding current in the wires is?
If you transmit at high voltage, you can send the same power at low current (P=VI), this is good because high current, means that you have high resistance and then you lose power to heat.
To find the watts of electrical power in an electrical circuit?
Power = Voltage*Current. Multiply the current and the voltage. Keep your units in mind. If your voltage is Volts, and your current is in Amps, your power will be in Watts. If you are using milliamps, your power will be in milliwatts. You can also use P=I2*R. The current squared, mulitplied by the resistance of the circuit. Or P=V2/R, the voltage squared divided by the resistance of the circuit. The last two of these can be derived from the basic equation V=I*R and P=V*I. Here's a little helper for you too. "Twinkle twinkle little star, power equals I squared R".
Will the power consumed by an electrical appliance increase with a reduction of applied voltage?
Power consumed by an electrical appliance will increase with a reduction of applied voltage.
How can power be calculated from current and voltage?
Power is the product of voltage and current -in other words, mutliply the two together.
What is the formula for power in terms of amperes?
Electrical power = current x voltage Current is in amps
Why is electric current produced by power plants is transmitted as alternating current?
Because AC allows the power to be transmitted over distance at high voltage and then transformed down for the users.
What happens to the electrical energy when power is transmitted through long distances?
Because wires are not perfect conductors, energy is released as heat. This is why electricity is transmitted at very high voltage and low current to reduce energy loss.
What does power line carry voltage or current?
It carries a current at the set voltage of the line. Current is the actual electricity that flows along the line and is used up in your electric appliances whereas voltage is the difference between the energy being generated at the station and ground.AnswerIt carries both voltage and current. Voltage exists between each line conductor, and current flows through each line conductor.
How do you calculate electrical power?
Voltage x current. In a resistor for example it is the voltage drop across it that is relevant, it may be part of a circuit.
Is power the product of voltage and current?
Yes, electrical power in Watts is volts x amps
What are short fast transfers of electrical voltage current or energy?
Power Spikes
What is the formula for electrical voltage?
Voltage(volts)=Power(watts)/Current (ampheres) Or Voltage=Curren X Resistance(Ohms) -X
What is electrical pressure?
Electro motive force = EMF = Voltage.
How do you measure the energy that Hydroelectric energy source produces?
The "produced energy" would most likely be transmitted in the form of an electrical current; you can use standard equipment to measure that. If you manage to measure the voltage, the current, and the power factor, you can multiply everything together to get the power; multiply power by time, and you get energy.
How electrical power is transmitted from power plan to the consumer?
electrical power from the power plant to consumer goes through the transmission & distribution system, first we transmit the high voltage power from the power plant to sub station in sub station we step down the voltage according to need & distribute it to the demand.
When current flow in electrical circuit is 2 amps what will the current flow be if the power doubles and the voltage remains the same?
Since power is voltage times amperes, in order to double the power while voltage remains the same, you must double the current - 4 amps in this case.
