How many electrons are there in electric current?

Electric current is what it is – a continuous flow of electrons which can not be quantified unless you count them at a specific point they are passing by. An electric bulb can serve this purpose. In a 60-watt light bulb, for example, about 30,00,00,00,00,00,00,00,000 (3 followed by 18 zeros) electrons a second flow past any point in the wires to the bulb filament. However, their speed of travel is only a few centimeters every second.

Additional reading:
Electric current (Wikipedia)

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