Power Flashcards
1
Q
What happens when an electrical charge goes through a change in potential difference
A
Energy is transferred
2
Q
Why is energy supplied to the charge at the power source
A
To raise it through a potential
3
Q
When does the charge give up this energy
A
When it fails through any potential drop in components
4
Q
What is the formula for energy transferred
A
Charge flow x potential difference
Charge flow : C
Potential difference: V
5
Q
What other formula is there to find out power
A
Potential difference x current
6
Q
How to find out the power when you don’t know the potential difference
A
P= Current(squared) x resistance
