Weekly Exam

What is the definition of electricity?

• Electricity is the flow of electric charge.

• Electricity is the process of generating heat.

• Electricity is a type of energy storage.

• Electricity is the movement of water molecules.

What are the two main types of electricity?

• Voltage Current (VC) and Frequency Current (FC)

• Static Current (SC) and Dynamic Current (DC)

• Pulsating Current (PC) and Steady Current (SC)

• Direct Current (DC) and Alternating Current (AC)

What is static electricity?

• Static electricity is the energy produced by moving water.

• Static electricity is the flow of electric current through a conductor.

• Static electricity is the heat generated by friction between two surfaces.

• Static electricity is the buildup of electric charge on the surface of objects.

What is the role of electrons in electricity?

• Electrons are the carriers of electric charge that flow to create electricity.

• Electrons are the building blocks of atoms.

• Electrons are responsible for thermal conductivity.

• Electrons are the source of magnetic fields.

What is the difference between conductors and insulators?

• Insulators conduct electricity better than conductors.

• Conductors facilitate electrical flow; insulators impede it.

• Conductors are used to store electrical energy; insulators are used to generate it.

• Conductors are always made of metal; insulators are always made of plastic.

What is an example of static electricity in everyday life?

• Rubbing a balloon on your hair and it sticking to a wall.

• Using a toaster to heat bread.

• Turning on a light switch.

• Pouring water into a glass.

What is the significance of electric fields?

• Electric fields are significant because they describe the influence of electric charges on other charges, governing interactions in physics and technology.

• Electric fields are solely responsible for heat generation in materials.

• Electric fields have no impact on magnetic fields.

• Electric fields are only relevant in high-voltage situations.

What are lines of force in an electric field?

• Lines of force are the paths taken by electrons in a circuit.

• Lines of force are imaginary lines that represent the direction and strength of an electric field.

• Lines of force indicate the speed of moving charges in an electric field.

• Lines of force are physical wires that carry electric current.

What is the relationship between potential difference and current?

• Current is directly proportional to potential difference.

• Current is independent of potential difference.

• Current is inversely proportional to potential difference.

• Current decreases as potential difference increases.

What is the unit of potential difference?

• watt

• ohm

• ampere

• volt