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Which mode of transmission would result in less energy loss high current and low voltage or low current and high voltage Explain your reason?
Wiki User
∙ 11y ago
low current high voltage
power dissipation in power line = I2R
the resistance of the power line is hard to reduce, especially when it is a long transmission line. but reducing the current through the line reduces losses as the square, a dramatic savings.
reducing voltage would have no effect and would dramatically increase losses due to increase in current to try to deliver same power.
Wiki User
∙ 11y ago
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Why is energy lost in power transmission lines?
Increase the voltage in the lines.
What is the Difference between voltage controlled device and current controlled device?
The difference between a current control device and voltage controlled device is that for current controlled device, the current is constant and the voltage is variable while for a voltage controlled device, the voltage is constant and the current is variable.
What are short fast transfers of electrical voltage current or energy?
Power Spikes
Can voltage decrease when current is increased?
Yes and no. Voltage is directly proportional to current from Ohm's Law (V=IR.) Thus, when voltage increases, so does current. However, voltage can be inversely proportional to current in some situations. This can be seen in a transformer, where current and voltage are inversely proportional due to the law of conservation of energy, in which P(in) must equal P(out). Thus, a greater input voltage leads to a small output current.
What is electrical energy transmission?
I would guess it refers to transmitting energy using an electrical current.
What are grid station?
Grid stations are the station which reduce the High Voltage to Low Voltage and increase the Current, the Current is Low and Voltage is High at the Generation Plant to reduce the energy losses during transmission of Electricity.
Why does the voltage need to be so high in a power station?
In long range,electric current can flow only when the wires are given high voltage.The voltage is about 20-30kV.eg.lightning. ---------------------------------------- Current of any voltage can flow in a wire. However, the larger the current is, the larger the resistance to flow and the greater the loss of energy during transmission. Therefore, to transfer the same amount of energy per second (power) without as much loss of energy due to resistance, current needs to be lowered by increasing the voltage since Power = Current * Voltage.
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 is battery voltage related to electrical energy?
Voltage is the amount of energy in each coulomb of charge that passes through the battery. This means that the energy is the voltage times the time-integral of the current. For a constant current: E = V I t Where E = Energy in Joules V = Voltage in Volts I = Current in Amps t = time in seconds
What is the reason why it is better to use high voltage instead of low voltage on long distance?
High voltage reduces the amount of energy lost due to the resistance of the transmission material (conductor), by reducing the current. In other words, increasing voltage reduces current, and lower current means less resistance loss. Voltage and current have an inverse relationship, and later on when the electricity gets closer to the consumer, voltages can be decreased which increases the current. Increased current means higher resistance, and it is resistance that does the work.
Why transmission is done on 11kv and 33kv?
High voltage reduces the amount of energy wasted in transmission lines.
Can you calculate power by multiplying voltage and current?
Not enough information. Power = current x voltage. Since voltage can be anything, there is no way to calculate power. Time is irrelevant; though once you have the power, it can help you calculate energy (energy = power x time).
What is model electricity?
if this is to do with electricity then this may help. Basically, you have to explain how the circuit works. So you may want to explain the function of the battery and how it produces electricla energy. Then you say how the current travels through the wire. Just explain what voltage is as well. It is quite easy as that.
Why is energy lost in power transmission lines?
Increase the voltage in the lines.
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Voltage and current are two different things. Voltage is potential energy per charge, in joules per coulomb, while current is charge transfer rate, in coulombs per second. Its that same as saying that a battery has voltage but no current, because there is no load. Well, a capacitor resists a change in voltage by requiring a current to change the voltage. Once that voltage is achieved, there is infinite resistance to the voltage, and thus no current.
Even without current flow there can be voltage in a circuit?
Voltage is potential energy and can exist in a open circuit.
Can the amount of energy carried by a power line be increased by raising voltage?
Yes, by increasing the voltage in a power line, the amount of energy carried can be increased. This is because power (P) is the product of voltage (V) and current (I), and increasing the voltage while keeping the current constant will result in higher power carrying capacity. However, it is important to consider the limitations of the equipment and the safety considerations when increasing voltage levels.
