Quiz on Earthing, Double Insulation, and Electric Charge

What is the primary purpose of an earth wire in electrical systems?

• To increase voltage
• To provide a safe path for current
• To insulate wires
• To conduct heat

How does double insulation protect users?

• By increasing current flow
• By ensuring live parts are not accessible
• By grounding the device
• By using thicker wires

What unit is electric charge measured in?

• Volts
• Amperes
• Coulombs
• Ohms

What happens when two objects with like charges are brought close together?

• They attract each other
• They repel each other
• They neutralize each other
• They create static electricity

What is the result of rubbing two insulators together?

• Heat generation
• Electron transfer
• Magnetic field creation
• Chemical reaction

Which of the following is an example of static electricity?

• A battery powering a flashlight
• Lightning during a storm
• A circuit board
• A flowing river

Why does a charged balloon stick to a wall?

• It creates a vacuum
• It repels positive charges in the wall
• It attracts negative charges in the wall
• It generates heat

What occurs when a charged comb is brought near bits of paper?

• The paper ignites
• The comb attracts the paper by inducing opposite charges
• The paper repels the comb
• The comb loses its charge

What is the relationship between electric charge and electrons?

• Charge is independent of electrons
• Charge is created by protons only
• Charge results from the addition or removal of electrons
• Charge is only found in conductors

In the context of electric charge, what does 'ion' refer to?

• A neutral particle
• A charged particle
• A type of electron
• A magnetic field