P2.1

Question 1

What does insulator mean?

Answer 1

Materials that are poor electrical conductors

Question 2

What does friction mean?

Answer 2

Energy losses caused by 2 or more objects rubbing together.

Question 3

Lightening

Answer 3

Clouds build up charge and once it is large enough it jumps from one part of the cloud to another or the ground

Question 4

earthing

Answer 4

places a metal conductor between the object and the earth, channelling charges safely to earthe

Question 5

earthing lightening

Answer 5

lightening conducter at top of building induces postitive charge which repels other positive charges and neautraliss the negative charge

Question 6

current

Answer 6

A flow of charged particles (electrons)

Question 7

inseries

Answer 7

current is same voltage is shared

Question 8

in parrallel

Answer 8

voltage is the same current is shared

Question 9

resistance

Answer 9

how easy or diificult it is for an electric current to flow

Question 10

pd equation

Answer 10

energy/charge

Question 11

ldr

Answer 11

in light resistance is low and more current flows in dark resistance is high and less current flows.

Question 12

thermister

Answer 12

high temp means resistance is low can switch on fan to cool laptop

Question 13

heating effect

Answer 13

puts heat to good use in electric hearers but causes fires

Question 14

velocity

Answer 14

speed in a direction, displacement/time

Question 15

acceleration

Answer 15

change in velocity

Question 16

stopping distance

Answer 16

thinking distance + breaking distance