10.3

Question 1

Electric circuit

Answer 1

a path for electrons to follow, consisting of a power supply, one or more loads, and conductors joining the power supply and loads

Question 2

Electric charge

Answer 2

physical property of matter that causes it to experience a force when near other electrically charged matter. Electric charge can be positive or negative

Question 3

Static electricity

Answer 3

a build-up of charge in one place

Question 4

Power supply

Answer 4

a device that can provide an electric current

Question 5

Load

Answer 5

device that uses electrical energy and converts it into other forms of energy

Question 6

Conducting path

Answer 6

connected series of materials along which an electric current can flow

Question 7

Electric current

Answer 7

a measure of the number of electrons flowing through a circuit every second. An increase in current means an increase in the rate of flow of electrons in the circuit

Question 8

Filament

Answer 8

coil of wire made from a metal that glows brightly when it gets hot. The filaments in light globes heat up when electricity flows through them.

Question 9

Switch

Answer 9

device that opens and closes the conducting path through which a current flows

Question 10

Resistance

Answer 10

measure of the electrical energy required for an electric current to pass through an object. The energy is changed to heat.

Question 11

Circuit diagram

Answer 11

diagram using symbols to show the parts of an electric circuit