Current Electricity

Question 1

factors that affect resistance

Answer 1

Length - if the length goes up, resistance increases

Question 2

Cross-Sectional area

Answer 2

if the wire is thicker, the resistance increases

Question 3

tempurature

Answer 3

if the tempurature is high, then the resistance increases

Question 4

type of metal used

Answer 4

some metals are just better tbh

copper is good

Question 5

what is ohms law?

Answer 5

I = V\R

I = current (a)
V = potential difference (v)
R = resistance (ohms)

Question 6

how do you generate electricity

Answer 6

heat –> steam –> turbines –> generator

Question 7

what can we use to produce heat

Answer 7

renewable and nonrenewable resources

Question 8

what are the renewable resources

Answer 8

solar
hydro
geothermal
wind
tidal wavess
biomass
feul cells

Question 9

what are the nonrenewable resources

Answer 9

fossil feuls (coal, oil, gas)
neucleur

Question 10

dry cell vs battery

Answer 10

dry cells are il
batteries ar emore than one dry cell

Question 11

pros and cons of hydro

Answer 11

PROS
- no air/water pollution

CONS
- building dams use concrete, steel,
specialized machinery, and fossil fuels
- expensive for taxpayers and the environment
- not a lot of suitable locations (Ontario has a lot tho so its ok)

Question 12

pros and cons of tidal

Answer 12

PROS
- no pollution

CONS
- only opperate if there is a wave (what if there isn’t?) ((station is on for 5h and off for 7h))
- Ontario tides are okay tho
- only generate near costal area