Electricity

Question 1

whats the current like in a single, closed loop?

Answer 1

the current has the same value everywhere

Question 2

what is resistance?
what is potential difference?

Answer 2

anything that slows the flow down (ohms)
driving force that pushes charge around

Question 3

what happens when the resistance greater across a component?

Answer 3

the smaller the current that flows

Question 4

what is the size of the current?

Answer 4

rate of flow of charge

Question 5

what does the resistance of a circuit depend on?

Answer 5

weather components are in series of parallel, length of wire

Question 6

what does an ammeter do?

Answer 6

measures the current in amps
must be placed in series

Question 7

what does a voltmeter do?

Answer 7

measures the potential difference across the wire in volts
need to be placed in parallel

Question 8

what do ohmic conductors have?

Answer 8

constant resistance

Question 9

what is an LDR

Answer 9

resistor dependent on intensity of light
bright light= resistance falls

Question 10

what does the resistance of a themistor depend on?

Answer 10

it decreases in hot conditions and increased in cool conditions
car engines