Electronic Principles
What is the difference between the kinds of charges for an electron and a proton?

An electron has a positive charge and a proton has no charge
An electron has a negative charge and a proton has no charge
None of these
An electron has a negative charge and a proton has a positive charge
An electron has a positive charge and a proton has a negative charge

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Electronic Principles
Current is

The number of free electrons in an atom
The force that causes electrons to flow
None of these
The flow of charged particles through a material
An imbalance of electrical charges

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