6.2 Current and Potential Difference Flashcards
What is current?
The rate of flow of charge
What is the equation for current?
Current = (change in)charge / time
What is the symbol for current?
I
What is the unit of charge?
Coulombs
what is the definition of a coulomb?
The amount of charge that passes in one second when the current is one ampere
How can you measure the current flowing through a part of a circuit?
Using an ammeter
In what way do you connect an ammeter?
In series
What is potential difference?
The potential difference between two points is defined as the work done in moving a unit charge between the points
What is the equation for potential difference?
Potential difference = work done / charge
What is 1 volt equivalent to?
1 joule per coulomb
How would you measure the potential difference across an electrical component?
Using a voltmeter
How do you need to attach a voltmeter?
In parallel
