Electricity Flashcards
What is an electrical current?
An electrical current is the flow of electrons around a closed circuit
What is a current measured in?
Amps (A)
What is a current measured with?
An ammeter
What does more bulbs in series mean?
There is a smaller current as there is a larger resistance
What does more cells in series mean?
There is a bigger current as there is more energy
Is current the same at all points in a series circuit?
Yes
What is the equation for voltage, current and resistance?
V = I X R (voltage = current x resistance)
What happens as an electron moves across a component?
It gains/loses energy
What is the energy gained/lost by an electron measured in?
Volts (V)
What is one volt equal to?
One volt = one joule of energy per coulomb of charge
What do we measure voltage with?
A voltmeter
What is the difference between how voltage is shared in series vs parallel circuits?
In a series circuit, voltage is split between the components whereas in a parallel circuit, voltage is the same across each branch.
