Building Electrical Circuits Quiz

What is a complete circuit?

• A circuit with a broken loop

• A circuit with gaps between wires and components

• A circuit with missing components

• A circuit with an unbroken loop for charges to flow

What happens to the brightness of a bulb by increasing the number of batteries?

• The bulb becomes dimmer

• The bulb turns off

• The bulb remains the same brightness

• The flow of electricity increases and the bulb becomes brighter

What is the purpose of a switch in an electrical circuit?

• To stop the flow of electricity

• To cool down the components

• To increase the voltage

• To make the bulb brighter

In a series circuit, how are components connected?

• End to end creating a single path

• In parallel sharing two electrical nodes

• With gaps between them

• With missing wires

What does voltage measure in an electrical circuit?

• The length of the wires

• The brightness of the bulb

• The pressure from the power source pushing the current

• The number of components in the circuit

Why are parallel circuits used in houses and streetlights?

• Because they are cheaper to build

• Because they use less electricity

• Because they are easier to draw

• Because each bulb is brighter and if one fails the others stay on

What does a voltmeter measure in an electrical circuit?

• The resistance of the wires

• The electrical difference between two points

• The current running through the components

• The temperature of the components

What happens in an open circuit?

• The components get very hot

• The bulb lights up

• The current flows through the components

• The circuit no longer has a complete path and the current cannot flow

What is the purpose of a battery in an electrical circuit?

• To cool down the wires

• To provide the energy for the electricity to flow

• To make the bulb dimmer

• To stop the flow of electricity

Why must a circuit diagram be drawn accurately?

• To show how electricity flows through a real circuit

• To show the symbols used in different countries

• To make the circuit look neat

• To make it easier for scientists to understand