more on power Flashcards
1
Q
what is the pd
A
the energy transferred per charge passed
2
Q
when is energy transferred
A
when a charge goes through a change in potential difference
3
Q
how do you work out energy transferred
A
charge flow x potential difference
4
Q
what happens withe the battery with the bigger potential difference
A
the more energy to the circuit for every coulomb
5
Q
what does power depend on
A
current and potential difference
6
Q
how do you calculate the power of an appliance
A
potential difference x current
7
Q
how can you find the power if you dont know the pd
A
power = (current)2 x resistance
