Exquisite electricity

What is electromagnetism?

• A type of chemical reaction

• A branch of biology

• One of the four fundamental forces of nature

• A type of weather phenomenon

What do opposite electric charges do?

• Create a magnetic field

• Generate light

• Repel each other

• Attract each other

What happens when atoms gain a positive or negative charge?

• They explode

• They turn into gas

• A measurable electric field forms

• They become invisible

What is formed when electrically charged particles start to move?

• A magnetic field

• A flowing electric current

• A solid structure

• A gas cloud

What is the relationship between voltage and potential difference?

• They are the same thing

• Voltage is the cause of potential difference

• Potential difference is the cause of voltage

• There is no relationship between them

How is potential difference measured?

• Using a voltmeter

• By counting electrons

• Through temperature changes

• By observing color changes

What happens to voltage in a closed circuit?

• It decreases

• It increases

• It remains constant

• It becomes negative

How does the resistance of a wire change with its length?

• Increases

• Decreases

• Remains constant

• Depends on the material

What happens to the current in a circuit if the resistance is increased?

• Current increases

• Current decreases

• Current remains constant

• Current becomes negative

What material is commonly used as a conductor in electrical wires?

• Copper

• Plastic

• Wood

• Aluminum