willowmusic54 posted an update 2 months ago
Electricity was proven to exist since instances when amber and fur was rubbed together with the ancient Greeks, allowing the output of static electricity.
The 1st remarkable achievement in this subject was by Alessandro Volta, an Italian physicist, who developed the first circuit in 1800. Younger crowd showed that a circuit should be closed, or complete, to ensure electricity circulation through it. Science fair experiments could be conducted using circuits that relate this principle.
Volta’s student, Georg Simon Ohm, made another discovery in 1826. He observed that some materials failed to allow electricity to pass through freely. Put simply, they resisted the flowing of electricity through them. This resistance of a circuit is measured by a unit called ohms and is also abbreviated with the Greek letter omega (?).
Things allow electricity to go through them whereas others don’t let it to move very well. Those materials which allow electricity to maneuver through options generally known as conductive materials. Those materials that resist the passage of electricity through them are called insulators. The resistance of conductive materials are low whereas the resistance of insulators is high. We can use copper wire being a conductor and plastic coating as a possible insulator.
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