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20.1 & 20.2

Across
____ Law: relationship between voltage, current and resistance
Unit of resistance
Converts chemical to electrical energy
Current that flows in one direction
A material with very low resistance
Opposition to the flow of charge
Material which stops flow of electrons
Measure of potential difference
What happens when electrons are lost or gained
Down
Unit of charge
Positive subatamic particle
Material that allows flow of electricity
Negative subatomic particle
Electric ______ is an effect that charge has on other charges
Type of current that switches direction
Unit of Potential difference
Unit of current