Electronic Principles
What kind of battery is most likely included in a cordless electric knife?

Nicad battery
None of these
Zinc-carbon battery
Mercury-cell battery
Lead-acid battery

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

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

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Electronic Principles
What is a negative ion?

An atom that contains more protons than neutrons
An atom that contains more protons than electrons
None of these
An atom that contains more electrons than protons
An atom that contains more electrons than neutrons

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