Physics Topic 2 Definition

Question 1

Series circuit

Answer 1

Circuit which only has one loop for the current to flow through

Question 2

Parallel circuit

Answer 2

Circuit where there is more than one path for the current to flow

Question 3

Potential difference

Answer 3

Another word for voltage. Difference in the energy carried by electrons before and after they have flowed through a component

Question 4

Voltmeter

Answer 4

Instrument for measuring the potential difference across a component

Question 5

Resistance

Answer 5

How easy it is for an electric current to flo through something

Question 6

Ohms

Answer 6

Unit for measuring resistance

Question 7

Variable resistor

Answer 7

A resistor whose resistance can be changed by turning a knob or moving a slider

Question 8

Filament lamps

Answer 8

A light bulb whose resistance increases when it gets hot

Question 9

Diodes

Answer 9

Component that lets electric current only flow in one direction

Question 10

Light dependant resistor

Answer 10

A resistor whose resistance gets lower when light shines on it

Question 11

Ammeter

Answer 11

An instrument for measuring the size of a current. Put into circuit series with other components