mock rah

Question 1

what is a fuse

Answer 1

it blows to break the circuit when theres excess current

Question 2

what a diode

Answer 2

only lets current flow one way, applies resistance in the other direction

Question 3

what’s a thermistor

Answer 3

applies resistance based on the temperature

Question 4

what sort of things affect resistance

Answer 4

whether the circuit is in parallel or series
the length of the wire

Question 5

What does an ammeter do and how do you connect it

Answer 5

measures current, connect it in series

Question 6

What does a voltmeter do and how do you connect it?

Answer 6

measures potential difference, must be placed in patellar around what you’re investigating

Question 7

what’s an light dependent resistor

Answer 7

a resistor that is dependent on the intensity of light

Question 8

series circuits

Answer 8

PD (voltage) is shared between components
current is the same everywhere
resistance adds up

Question 9

parallel circuits

Answer 9

PD is the same across all components
current is shared between branches
more resistance you add, the more it decreasesn

Question 10

mains supply is ________ current

Answer 10

alternating current

Question 11

battery supply is ________ current

Answer 11

direct current

Question 12

what colour is the live wire

Answer 12

brown wire

Question 13

what colour is the neutral wire

Answer 13

blue

Question 14

what colour is the earth wire

Answer 14

yellow and green