I understand that it is an electrical charge, but I need to explain technically because as I explain it I don't understand the theory behind it.
Charge is a fundamental property of certain subatomic particles.
This is from Wikipedia:
You may also want to know about ESD (electrostatic discharge) which can give you a little shock and sometimes create a spark, or sometimes destroy a semiconductor even if there's not enough charge to feel a shock or generate a spark.
And how capacitors work by storing a (relative) positive charge on one side/terming and a (relative) negative charge on the other side, with an insulator (dielectric) in-between.
Electric charge is a collection of free electrons. These electrons can flow (spread, emanate) into other matter in an attempt to equalize the density of electrons.
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