Key Electronics Flashcards by Bethany Staat

Q

What are currents measured in?

A

Amps

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Q

What is voltage measured in?

A

Volts

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Q

What is resistance measured in?

A

Ohms

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Q

What is power measured in?

A

Watts

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Q

What is energy measured in?

A

Watt-hours

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Q

What is ohms law?

A

Current= voltage over resistance

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Q

Principle of power

A

Power (in watts)=voltage x current or p=ei

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Q

How does a current flow?

A

From a negative pole to a positive pole.

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Q

What must exist for electricity to flow?

A

A closed circuit.

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Q

What frequencies do electronic devices operate at?

A

Very high frequencies

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Q

What are devices that change ac to dc?

A

Rectifier

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