Electricity Flashcards
What happens to the CURRENT in a parallel circuit?
It is SHARED between each branch.
What happens to POTENTIAL DIFFERENCE in a series circuit?
It is SHARED between each component (depending on their resistance).
What happens to POTENTIAL DIFFERENCE in a parallel circuit?
It remains CONSTANT on each branch.
What is the equation for RESISTANCE in a series circuit?
Rt = R1 + R2 + R3 …
What is the equation for RESISTANCE in a parallel circuit?
1/Rt = 1/R1 + 1/R2 + 1/R3 …
What happens to the CURRENT in a series circuit?
It REDUCES with increasing resistance (number of components).
What is the equation for RESISTANCE?
RESISTANCE (R) = POTENTIAL DIFFERENCE (V) / CURRENT (A)
R = V/I
What is current?
The flow of charge
What is the unit for current?
Amps (A)
What is the unit for potential difference?
Volts (V)
Conductors have ……… resistance
Low
Insulators have ……….. resistance
High
Current always primarily chooses…
The path of lower resistance
What direction do electrons flow?
Negative -> Positive
