if electric charge is a property of an object then how does it vary within an object? This varying of charge is mentioned in additivity of charges in your video.
please clarify my doubt. And please do tell if i have understood the concept in a wrong way.
Answer:
Electric charge is the property(intrinsic) of elementary particles, like electron and proton.
When a charged or uncharged object receives or removes electrons, the charge on object varies.
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