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Which statement correctly describes the relationship between power, voltage, and current?

If voltage is increased, and no other changes are made, power will decrease.
If voltage is increased, and no other changes are made, power will increase.
If current is decreased, and no other changes are made, power will increase.
In order to decrease power, voltage must be decreased.

2 Answers

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If voltage is increased, and no other changes are made, power will increase.
User Emiliano Zilocchi
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Answer:

The statemente "If voltage is increased, and no other changes are made, power will increase" describes the relationship between power, voltage, and current.

Step-by-step explanation:

The flow of electricity through an object, such as a cable, is known as current (I). Its unit of measure is amps (A). Then the current is a measure of the speed at which the charge passes through a given reference point in a specified direction.

The conductive force (electrical pressure) after the flow of a current is known as voltage and is measured in volts (V) (the voltage can also be referred to as the potential difference or electromotive force). That is, voltage is a measure of the work required to move a load from one point to another.

Power is the speed or speed with which energy is consumed. Energy being the capacity of any electrical mechanism or device to perform a job, power can also be defined as the energy developed or consumed in a unit of time. Its unit of measure is the Watt. Since power is energy per unit of time, 1 W equals 1 joule / second.

Watt's law applies to electrical circuits and establishes that the electrical power P supplied by a circuit element is directly proportional to the product between the voltage of the power supply V of the circuit and the current intensity I flowing through it.

Mathematically, Watt's law expresses:

P = V.I

In the previous expression, you will be able to observe that if the voltage is increased and other changes are not made, that is to say that the current I does not vary, the power will increase.

The statemente "If voltage is increased, and no other changes are made, power will increase" describes the relationship between power, voltage, and current.

User Saulo Silva
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