Circuits

Front

What is the purpose of the plastic insulation around the wire in a phone charger?

Back

The plastic is an insulator that prevents electrical current from escaping and protects users from electric shock.

Front

What component carries electrical energy to devices like lightbulbs?

Back

Wires carry electrical energy to devices.

Front

What device converts electrical energy into light energy?

Back

A light bulb converts electrical energy into light energy.

Front

What is the primary source of electrical current in a circuit?

Back

A battery is the main source of current (power) in a circuit.

Front

Which appliance is used to convert electrical energy into heat energy?

Back

A hair dryer converts electrical energy into heat energy.

Front

What is an electrical circuit?

Back

An electrical circuit is a closed loop that allows electric current to flow from a power source to a device and back.

Front

What is the role of a battery in a circuit?

Back

A battery provides the electrical energy needed to power devices in a circuit.

Front

What is the difference between conductors and insulators?

Back

Conductors allow electrical current to flow easily, while insulators resist the flow of electrical current.

Front

What happens to electrical energy in a resistor?

Back

In a resistor, electrical energy is converted into heat energy due to resistance.

Front

What is the function of a switch in a circuit?

Back

A switch controls the flow of electricity in a circuit, allowing it to be turned on or off.