8.1 Introducing Electricity And Simple Circuits

Question 1

3 basic components of an electric circuit

Answer 1

1. Electricity source, electrical energy
2. Device using electrical energy
3. Wire connect diff parts tgt

Question 2

2 conditions for electricity to flow

Answer 2

1. Electric cells in circuit
2. Complete path fr one end of cell to other

Question 3

What is closed circuit and open circuit

Answer 3

Complete path for electricity to flow form one end to another
Gap in circuit, electricity cant flow

Question 4

Energy conversion in circuit w bulb

Answer 4

Chemical energy in cell, electrical, light and thermal

Question 5

What are electrical conductors and insulators
Examples

Answer 5

Allow electricity to flow through
Eg copper, aluminium, iron; graphite

Don’t allow electricity to flow through
Eg, plastic, wood, glass

Question 6

What are switches used for

Answer 6

Close or open circuit

Question 7

Circuit when switch is closed
Circuit when switch is opened

Answer 7

Complete path for electricity to flow; closed circuit, electrocution can flow

Gap in circuit; opened circuit, electricity cant flow