Introduction to Electric Circuits

What is an electrical circuit?

• An open system that generates electricity

• A device used to store electrical energy

• A closed loop that contains a power source and allows electrons to flow

• A method for reducing electrical flow

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What symbol represents a cell in a circuit diagram?

• A single line

• A square

• Two parallel lines of unequal length

• A circle

What does a battery symbol consist of in circuit diagrams?

• Two or more cell symbols put together

• A series of dots

• A circle with a plus inside

• A single cell symbol

What does the current in a circuit represent?

• The resistance of the circuit

• The potential difference across components

• The voltage of the battery

• The flow of electrons around the circuit

How is current measured?

• In volts

• In watts

• In ohms

• In amperes

What does potential difference drive in a circuit?

• The resistance

• The flow of electrons

• The size of the battery

• The brightness of the lamp

What is another name for potential difference?

• Power

• Voltage

• Resistance

• Current

What does resistance oppose in a circuit?

• The flow of electrons

• The potential difference

• The current measurement

• The flow of water

Which terminal of a cell is represented by the longer line?

• Neutral

• Positive

• Negative

• Ground

In which direction does conventional current flow?

• It does not flow

• In a circular motion

• From positive to negative

• From negative to positive