Energy and voltage Flashcards
1
Q
When electrons pass through a power supply in a circuit they gain…
A
Energy
2
Q
When electrons pass through a component (not power supply) they…
A
Lose energy
3
Q
The amount of energy lost or gained depends on
A
The voltage across the component involved
4
Q
1 volt =
A
1 joule per coulomb
5
Q
If E is energy transferred (work done) when a charge Q flows through a device with a voltage across it then -
A
E=QV
6
Q
Power is the rate work is done or
A
Energy is transferred (P=E/T)
7
Q
Power is measured in
A
Watts
8
Q
1 Watt is
A
1 Joule per second
