Electricity and Its Essential Role in Everyday Life

The video tutorial explains the importance of electricity in daily life, detailing the sources of electric current, including primary and secondary cells. It covers the components and functioning of electric circuits, illustrating standard symbols and diagrams. The tutorial also distinguishes between conductors and insulators, providing practical examples and safety tips for handling electricity.

What is the term used for electricity in motion?

• Current electricity

• Kinetic electricity

• Static electricity

• Potential electricity

Which type of cell cannot be recharged?

• Secondary cell

• Accumulator

• Primary cell

• Alkali accumulator

What is the main difference between primary and secondary cells?

• Primary cells are non-rechargeable

• Secondary cells are non-rechargeable

• Primary cells are larger

• Secondary cells are smaller

What happens in a closed electric circuit?

• The circuit is broken

• Current flows and appliances work

• The circuit is incomplete

• Current does not flow

In an electric circuit, what does a switch do?

• Increases voltage

• Converts electricity to light

• Completes or breaks the circuit

• Stores electrical energy

What is the symbol for a battery in a circuit diagram?

• A combination of cell symbols

• A zigzag line

• A single line

• A circle with a cross

What is the purpose of a fuse in an electric circuit?

• To increase current

• To convert electricity to heat

• To act as a safety device

• To store energy

Which of the following is a good conductor of electricity?

• Rubber

• Metal wire

• Wood

• Plastic

Why do electricians use tools with plastic or rubber handles?

• To prevent electric shock

• To improve durability

• To reduce weight

• To increase grip

What is the role of insulators in electrical safety?

• They prevent current from passing

• They allow current to pass

• They store electrical energy

• They increase voltage