Electrical symbols

Question 1

Component

Answer 1

Device in an electrical circuit.

Question 2

Switch

Answer 2

Used to turn a circuit on (closed) and off (open).

Question 3

Lamp

Answer 3

Current heats the filament in the bulb so it gives out light.

Question 4

Resistor

Answer 4

Restricts or limits flow of electrical current.
Fixed Resistor- A Resistor with a resistance that is fixed and cannot be changed.
Variable Resistor- A Resistor with a resistance that can be changed.
Light-Dependent Resistor- A Resistor affected by changes in light levels

Question 5

Resistance

Answer 5

Opposition in a component to the charge flowing through it.

Question 6

Thermistor

Answer 6

A device where its resistance decreases as its temperature increases

Question 7

Ammeter

Answer 7

Device used to measure electric current

Question 8

Voltmeter

Answer 8

Used to measure potential difference or voltage

Question 9

Semiconductor Diode

Answer 9

Device that allows current to flow through only one direction.