Electricity P1T2 Flashcards
What is current?
The rate of flow of charge
What is the word equation for current?
Current = charge /time
What is the unit for current?
Amps [A]
How does adding cells impact the current in a series circuit?
The current increases
How does adding cells in parallel impact the current?
The current does not increase
How does adding components in series affect the current?
It decreases the current in a circuit
How does adding components in parallel affect the total current in the circuit?
It increases the total current
What is a series circuit?
Where the current is the same everywhere and the electrons have no other way to go
What is a parallel circuit?
The current splits across different branches, this is because the electrons are able to go on different path ways. The sum of the current in the different branches makes the total current before the branch.
What is potential difference?
The work done per unit charge, as a current flows around the circuit
What is the word equation that links potential difference, work done and charge?
Potential difference = work done / charge
What is the symbol equation for potential difference?
V = W/Q
or
V = E/Q
What is the potential difference rule for a series circuit?
In a series circuit the total potential difference supplied by the cell or battery is equal to the sum of the potential difference across the components
What is the potential difference rule for a parallel circuit?
In a parallel circuit the potential difference supplied by the cell or battery is equal to the potential difference across each branch
What is the word equation that demonstrates potential difference, current and resistance?
Potential difference = current x resistance
V = I x R
(Volts = Amps x Ohms)
