Electric Circuits Flashcards
Current
a flow of electricity which results from the ordered directional movement of electrically charged particles
Voltage
An electromotive force or potential difference expressed in volts
Ammeter
An instrument for measuring electric potential in amperes
Voltmeter
An instrument for measuring electric current in volts
In series
A set of batteries or electrical components arranged so that the current passes through each successively
In parallel
Electrical components or circuits connected to common points at each end ; not in series
Series circuit
Resistors are arranged in a chain
Parallel circuit
Resistors are arranged in different branches
Resistance
A measure of the opposition to current flow in an electrical circuit
What is resistance measured in?
Ohms
How to calculate potential difference
Potential difference (V) = current (I) x Resistance
(V) (A) (Omega)Variable resistor
A resistor of which the electric resistance value can be adjusted
