Electric Current and Potential Difference Flashcards

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Note: We may include questions that have multiple correct answers. It's useful to remember specific examples to understand these concepts better.

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What is an electric current?

An electric current is the continuous flow of electrons in an electric circuit, representing a flow of charge.

What is needed for an electric current to flow?

A source of energy (like a battery) and a complete electrical circuit are needed for an electric current to flow.

How do you measure electric current?

Electric current is measured using an ammeter, which is placed in series with the component you are measuring, and it is measured in amperes (amps or A).

What is potential difference (voltage)?

Potential difference, or voltage, is the difference in energy between two components in a circuit. It is measured in volts (V).

How do you measure potential difference?

Potential difference is measured using a voltmeter, which is connected in parallel with the component being measured.

What are the units and measuring devices for current and potential difference?

Current is measured in amperes (A) using an ammeter in series, and potential difference is measured in volts (V) using a voltmeter in parallel.

Revision Notes
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