9.4 Voltage Flashcards
1
Q
What is voltage?
A
A measure of energy supplied to electrons in a circuit.
2
Q
Why is voltage needed?
A
To make electrons flow round a circuit
3
Q
What generates voltage in a circuit?
A
Chemicals in cells that react to generate a voltage.
4
Q
How is voltage measured?
A
In volts using a voltmeter.
5
Q
How do you get the total voltage of multiple cells connected in a series?
A
Their voltages are added together.
