Electricity: Potential Difference from Batteries (DONE) Flashcards
Describe what is meant by a battery. Calculate the potential difference produced by a battery.
What is a battery?
A battery is two or more cells connected together.
The cells in a battery must be connected in the same direction. If these are facing the the appositive direction what could this mean for the voltage?
The P.D / voltage will cancel out in a battery if the cells are facing the apposite direction.
What would happen to the potential difference if we connected two of these cells in series to form a battery?
If we connected two of these cells in series the potential difference adds up to make a P.D of 18V.
Determine the P.D of this battery and why its this: each cell has a P.D of 9V.
Cells connected in series add up. So the P.D / V is 27V.
Each cell has a P.D of 9V. Determine the overall P.D of this battery and give a reason why.
The overall P.D of this battery is 0V as the cells are facing the opposite direction and therefore cancel out.
Each cell has a P.D of 9V. Determine the overall P.D of this battery and give a reason why.
The overall P.D of this battery is 9V as one cells facing the wrong way causing another cells P.D to cancel out, leaving only one cell with a voltage of 9V.
