Currents and Potential difference Flashcards
1
Q
What is electric current?
A
The flow of charge
2
Q
How do we measure the flow of charge?
A
Use an Ameter
3
Q
What is the unit for charge?
A
1 coulomb
4
Q
What is the formula for current?
A
I = Q/t Current = charge/time
5
Q
What is potential difference?
A
Potential difference is the work done per column of charge that passes the component
6
Q
What is work done?
A
Energy transferred in joules
7
Q
What is the formula for potential difference?
A
V = W/Q
Potential difference = energy transferred/ Work done
