capacitors

Question 1

capacitance

Answer 1

the amount of charge its able to store per unit of potencial difference

Question 2

capacitance equation

Answer 2

C = Q/V

Question 3

capacitor

Answer 3

an electrical component that can store electrical charge
made up of 2 electrical conducting plates separated by an electrical insulator

Question 4

what happens when a capacitor is connected to a power source

Answer 4

charge builds up on its plates
one plate becomes negatively charge, another becomes positive
the plates are separated by dielectric insulator so no charge can move between the plates
this means potential difference build between the plates

Question 5

How useful is a capacitor

Answer 5

store rerlatively low amounts of charge and usually used to provide power for short amounts of time
useful as it can store charge until neededand then discharge all of its charge in a fraction of a second, making it dangerous

Question 6

uses of a capacitor

Answer 6

camera flash
ultracapcitors
back up power

Question 7

energy stored

Answer 7

when a capacitor is charge, one plate is positive, the other negative making an attractive force between the plates
this requires energy supplied by the power source and stored as electrical potential energy
when charge is released so is the electrical potential energy

Question 8

equation for energy

Answer 8

E = 0.5 Q VV