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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)
What else can I help you with?
How the current are related to the power supplied by the source?
Power (watts) is voltage times current.
What is the difference between voltmeter and voltage sensor?
voltmeter-measure voltage through. voltage sensor-identify overvoltage/undervoltage.(related to power quality)
Which of the following power-related problems is associated with a short term voltage drop?
A brown out.
How is power rating related to voltage and current?
: They are directly related Either one increases power rating will increase. For an IC either one increases will dire-rate the component.
How much amp is in a dc voltage?
There are no amps in a voltage because they are quite different electrical units. They are related by the 'power equation' which is: watts = amps times volts
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)
What equation relates power to current and resistance?
Power = (current) times (voltage)Current = (Power) divided by (voltage)Voltage = (Power) divided by (current)
What does the power vs voltage graph reveal about the relationship between power consumption and voltage in a circuit?
The power vs voltage graph shows that power consumption in a circuit is directly proportional to voltage. This means that as voltage increases, power consumption also increases.
What is the role of voltage in an electrical circuit?
Voltage is related to energy by charge. Power equals voltage times current (amperes), and energy equals voltage times charge (coulombs).An ampere is 1 coulomb of charge moving per second.A watt (power) is 1 joule of work done (or energy transferred) per second.
What initiated the change into ac system from dc system?
The need for more and more power. In a fixed voltage system like DC, power is proportional to current, and current is related to conductor size. In order to have more power, you had to have larger conductors, and it was becoming unwieldy. With AC, we could use transformers to step up the voltage. Power is now proportional to both current and voltage, but current is still only related to conductor size, which means that with higher voltage, you could transfer more power with smaller conductors. Transformers would step up the voltage at the substation for transmission and distribution, while transformers on the poles would step it back down for small groups of services.
How do you calculate voltage efficinecy in DC voltage?
The efficiency of a device in electronics and electrical engineering is defined as useful power output divided by the total electrical power consumed. Scroll down to related links and look at "Electrical efficiency - Wikipedia".
What Is necessary to convert higher voltage power to low voltage power?
A transformer
