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Usually when voltage increases current increases too, but when it happens that current decreases when voltage increase to minimize lose of power.
Total power = IV
Power loss = I * V(across wire) = I^2 R = (Power / V)^2 R
V = potential difference across the wire which is much smaller (you hope) than the total potential difference between the wire and ground.
So you lose less power using a very high voltage and a very low current for transmission and then transforming to the voltage you need at the point of delivery.
Wiki User
∙ 14y ago
Wiki User
∙ 14y agoPower (P) in Electrical terms is Voltage (V) multiplied by Current (I)
i.e. P = V * I
Power is also rate of change of Energy with respect to time.
Accoding to Law of conservation of energy Energy can neither be created nor destroyed... meaning your power is constant. To satisfy this, if current increases voltage must decrease.
Not really practical case though, since to increase current you must decrease resistance (R). V = I * R. This will satisfy law of conservation of energy as well.
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How do you increase or decrease voltage?
This question makes no sense as written. However, maybe it will help to know that for a given load if you increase voltage the current increases proportionally and if you decrease the voltage the current decreases proportionally. Ohm's Law says Voltage = Current x Resistance.
Can impedence inversion be obtained by a short circuit stub?
A: An impedance inversion is defined as voltage increases the current decreases. A tunnel diode has that detente
Why terminal voltage of a self excited shunt generator decreases with an increase of load?
When the generator is loaded, flux per pole is reduced due to armature reaction.
When latitude increases does temperature decrease?
The close the latitude is to 0, the hotter it is.
What happens to the brightness of a bulb if the volts are increased?
The electrical potential energy increases as the voltage is increased. It further excites the filament in the bulb more than a lessor voltage would. Using good old ohm's law (Voltage = Current x Resistance), a larger voltage applied to a bulb at the same resistance increases the current proportionally and larger currents has the effect to cause higher temps in conductors
How does loading effect affect flow of current?
Ohm's Law says that Voltage = Current x Resistance (Load). Therefore Current = Voltage / Resistance and as resistance decreases current increases and as resistance increases current decreases.
A devise that increases or decreases the voltage of alternating current?
TRANSFORMER
What increases when the resistance of an electrical circuit decreases?
Current increases if the voltage remains constant.
An electrical tool that increases or decreases the voltage in an electrical current is?
capacitors
Does electrical current generally increase as resistance decreases?
Ohm's Law Voltage = Current x Resistance. So for a fixed voltage as R decreases then current increases proportionally.
When resistance decreases what happens to current?
Based on the simplest Electrical Equation V = I * R,(reads: voltage equals current multiplied by resistance)then, rearranged I = V / R .As resistance decreases, current flow proportionately increases
In 3 phase voltage increases and current decreases why?
If the load current descrease, there is less voltage drop caused by the resistance of the wire, so the voltage is higher.
Which law says voltage increases current decreases?
Ohm's law says the opposite.
What happens to the current in a device if the resistance of the device increases and the voltage difference stays the same?
If resistance increases and voltage stays the same, then current decreases. Ohm's Law: Current equals Voltage divided by Resistance.
What happens to the power in a circuit as the current increases?
P=VI If current (I) increases then P will increase proportionally. That is, assuming that voltage (V) remains constant. If voltage decreases and current increases or vice versa, proportionally then P will remain the same.
If the value of resistance increased then?
If the resistance is increased the current, which is inversely proportional, decreases and, the voltage drop increases.
What happens to voltage when resistance increases?
Ohm's law states that "The current is directly proportional to the applied EMF (voltage) and inversely proportional to the resistance in the circuit." <<>> if resistor exists, resistance decreases according to ohm's law, current is directly proportional to voltage and current is inversely proportional to resistance it means as current increases, voltage increases. resistance increases, current decreases so as voltage if there is no resistor, there should be no resistance except internal resistance of voltmeter and ammeter
