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Power = voltage x current x power factor.
In DC, the power factor is one, so you can omit it. In AC, depending on the circuit elements used, the power factor is quite often so close to one that you can omit it as well.
Wiki User
∙ 12y ago
Wiki User
∙ 12y agoWell maybe the best way to answer this is to try to understand it through mathematical equations. I = E/R wheras I = current E=Voltage R = Resistance
This is "Ohm's Law" in its principle form.
Current is in direct relation to Voltage but also in direct relation with resitance and vise versa. By using the formula you could plug in a known voltages and divide it by known resistances and get the current in amperes.
Think of current and voltage as a moving stream of water, the actual flow of water is the curent, but the force behind it causing the flow or "Push" is the voltage pressure
Wiki User
∙ 12y agoHere are two commonly used formulae that relate the two:
1) V=IR (Ohm's law; voltage = current x resistance). You can consider the current as the dependent variable: if you have a certain voltage and a certain resistance, the current that will flow is dependent on both (I = V/R).
2) P=IV (power transferred is the product of current of current and voltage).
Wiki User
∙ 11y agov=IR
since there's no concept of phase angle there won't be cos pi included.
just voltage is equal to current multiplied by path resistance.
Wiki User
∙ 14y agopower = voltage * current
P=V*I
Wiki User
∙ 14y agoV=i x r
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How are current and voltage related are they directly proprtional or inversely proportional?
Current and Voltage are directly proportional. V=voltage, I=current, R=resistance V=I*R
What is the relationship between the voltage and the current when the resistance is kept constant?
Ohm's Law: voltage = current * resistance. If resistance is a constant, then voltage is directly proportional to current.
How can you convert the voltage into milli amps?
Voltage is a property of electrical potential. Amperes (and miliamperes) are the units of electrical current. Even though these are related to each other in a circuit, they are not the same thing, and they cannot be "converted" into each other.Also, these properties are only related through a "load" the circuit provides (the resistance and inductance of the circuit), and make sense only when related to each other this way. If there is current, there will be voltage as well, but if there's only voltage, there will be no current unless there is some resistance as well (even a wire has resistance) - otherwise the circuit is "open" and no charge is flowing.In a simple circuit with a voltage source and resistor:milliamps = voltage*1000/resistance.If your circuit has diodes, capacitors, inductors, etc. it gets much more complicated.
What happens to the current when the voltage is doubled and the resistance is constant?
I = E/R If resistance is constant, then current is directly proportional to voltage. Double the voltage ===> the current will also double.
How are current and voltage related in a circuit?
Actually, they are not related. They are two separate components. To illustrate: take a waterfall for example. The current (amperage) flowing over the waterfall is the current or amperage (how much water is going over the waterfall. The Voltage is, essentially, the potential energy available. If the water fall is 100 feet tall it will have significantly more "voltage" than if it is only one inch tall. A 100 foot high water fall that has only one drop of water per second going over it will have a high "voltage" but a very low current. A one inch waterfall have 300,000 gallons per second going over it will have a very high "current" but low voltage. So concerning an electrical circuit, if one of the current or voltage are low enough it will not harm you regardless of how high the other one is. Volts and amperage together basically combined in a formula to determine the number of watts, but they are not specifically related to each other. As per Ohm's law V=IR where V is voltage, I is current and R is resistance. since Voltages is equal to current times resistance than makes them directly proportional to each other and therefor related.
How are current and voltage related are they directly proprtional or inversely proportional?
Current and Voltage are directly proportional. V=voltage, I=current, R=resistance V=I*R
How is power and voltage related?
in ac circuits power,P=VICOS@ @ is the angle between voltage and current. in dc P=VI V is the voltage I is the current. Power (in Watts) is current (A) x voltage (V)
How are voltage resistance and current related?
Current, voltage and resistance are related by the Ohm's law formula which states that current is directly proportional to the applied voltage and inversely proportional to the resistance at a constant temperature. Stated mathematically: I = E/R where I = current in amperes, abbreviated to A E = voltage in volts, abbreviated to V R = resistance in ohms, usually signified by the Greek omega Ω
How the current are related to the power supplied by the source?
Power (watts) is voltage times current.
What related to voltage and current?
Resistance = Current x Voltage This is commonly written R = IV note: this means (ohm)=(coulomb/second)(volt)
What is the relation between voltage and current?
Voltage and current are two different things. Voltage is the electric potential difference between two points. Expressed in volts, it is also joules per coulomb. Current is the charge flow past a point. Expressed in amperes, it is also coulombs per second. You can relate voltage and current using Ohm's Law, which states that voltage is equal to current times resistance. Resistance is, therefore, equal to voltage divided by current. Using base units, resistance is equal to joules per coulomb divided by coulombs per second, which simplifies to joule-seconds per coulomb squared. That is a difficult unit to write, so we just use ohms as the unit.
According to Ohm's Law how is voltage related to resistance and current?
1). Voltage = (resistance) x (current)2). Current = (voltage) / (resistance)3). Resistance = (voltage) / (current)I think #2 is Ohm's original statement, but any one of these can be massaged algebraicallyin order to derive the other two.
What is the difference in the current and voltage?
Current (amperes) is the rate of flow of electric charge, in coulombs per second. Voltage, on the other hand, is the electric potential of that charge, in joules per coulomb.Current and voltage are related to resistance by Ohm's Law, which states that voltage is equal to current times resistance.There is a tendency to misuse the term "current", and to apply it, for instance as "an electric current of 120 volts". This usage is incorrect. Current is current, and voltage is voltage, as noted above.
How are current and voltage related to the power supplied by the source?
in ac circuits power,P=VICOS@ @ is the angle between voltage and current. in dc P=VI V is the voltage I is the current. Power (in Watts) is current (A) x voltage (V)
How is current related to voltage?
both cannot exists if either one is missing.
What are three related electrical factors did George Ohm investigate?
the answer is current, voltage, and resistance
What happens to the current in a circuit if a 10 ohm resistor is removed and replaced by a 20 ohm resistor?
Voltage, current, and resistance can be related by this formula. V = iR, where I is the current. Assuming that the voltage stays constant, current will decrease. Hope this helps!
