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Electric current is simply the flow of free electrons in a conductor. It is usually defined as the rate of charge flow, because the free electrons represent an electric charge.

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What is electical circuits?

It is a way in which electrons from a voltage or current source stream. Electric current stream in a shut way is called an electric circuit. The point where those electrons enter an electrical circuit is known as the source of electrons.


Why low power factor need surcharge?

Low power factor leads to higher current in the system for the same real power requirement. (Check out the power triangle in any basic electical engg. book) higher current leads to higher system losses for the supply & distribution companies, drop in voltage, also necessiates higher sizing of system components. Hence low power factor attracts penalty also on the other hand some distribution companies provides incentives for maintaining higher pf. Regards, Sameer Shaikh


Are electric baseboard heaters efficient?

Amps and Watts measure different things. An Amp is a measure of electrical current and a Watt is a measure of Power. Which ever device draws the higher amperage will be the one that uses more electricity! Hence the 240 watt heater draw less amps even though it uses more watts: Volts Watts/Electical Current Amps/Power example heater 240 volt draws 2000/1000 watts - but uses 8.3/4.2 amps example heater 120 volt draws 1500/750 watts - but uses 12.5/6.3 amps


What is phase current?

A phase current is the current passing through a phase, whereas a line current is the current flowing through a line.


Why does collector current increase with base current?

the collector current is directly proportional to the base current