Measuring electrical current using ammeters Flashcards
What is electric charge
Some particles carry an electric charge. In electric wires these particles are
electrons. We get an electric current when these charged particles move from place to place.
What is electric current
An electric current is a flow of charge, and in a wire this will be a flow of electrons.
What is the symbol of a battery
The symbol for a battery is made by joining two more symbols for a cell together
How do you measure potential difference
Potential difference is measured using a device called a voltmeter. Just like ammeters, some types have a pointer on a dial, but most have a digital display. However, unlike an ammeter, you must connect the voltmeter in parallel to measure the potential difference across a component in a circuit.
What is potential difference
Potential difference is a measure of the difference in energy between two parts of a circuit. The bigger the difference in energy, the bigger the potential difference.
