Electricity Flashcards
charge measured in
coulombs
current measured in
amps
resistance measured in
ohms
voltage / potential difference measured in
volts
equation that links charge, current, and time
Q = I x T
equation that links potential difference, current, and resistance
V = I x R
electron insulator
a material that stops electrons from moving as easily
electron conductor
a material that helps electrons move more easily
series circuit
a circuit that is essentially a circle
parallel circuit
a circuit with multiple branches
resistance
a property of a component, making it difficult for charge to pass through
electrons
they are tiny negatively charged particles that are part of atoms
voltage
an electrical push from a battery / cell
current
the movement of electrons in a circuit
electric current
Rate of flow of electrical charge
diode
component that only allows current to flow in forward direction
parallel circuit - potential difference
components in parallel have the same potential difference across each component
total current
sum of currents flowing through the circuit
parallel circuits - resistance
total resistance is equal to 1/R1 + 1/R2 + 1/R3 etc
always less than the smallest resistance in circuit
adding more resistors decreases the total resistance
series circuit - resistance
total resistance is the sum of residtances of each component
energy transferred =
power x time
energy transferred =
charge x potential difference
power =
work done / time
