11. Power and electricity Flashcards
1
Q
why would a larger potential difference increase total amount of energy that is transferred?
A
each electron transfers more energy to the bulbs
2
Q
why would a larger current increase the total amount of energy that is transferred?
A
more electrons pass through bulb each second
3
Q
what causes heating?
A
electric current
4
Q
what is the equation for total electrical energy transferred?
A
energy transferred= current x voltage x time
E=IVT (energy in joules)
5
Q
what is the equation for electrical power?
A
P=IV
power in watts
5
Q
what is the equation for electrical power?
A
P=IV
power in watts
6
Q
what equation links power energy and time?
A
power = energy/time
