Download Resistors in Series and Parallel

RESISTORS IN SERIES AND
PARALLEL
Ch. 20 - 2
Resistors : Series


In a series circuit, all components are connected endto-end, forming a single path for electrons to flow.
When resistors are connected in series, the current in
each resistor is the same.
Resistors: Series


Total current in a series circuit depends on how many
resistors are present and how much resistance each
offers.
The equivalent resistance can be used to find current.
Guided Practice


Open books to pg. 738
Sample Problem 20A
Resistors : Series

Series circuits require all elements to conduct.
Resistors: Parallel

In a parallel circuit, all components are connected
across each other, forming exactly two sets of
electrically common points.
Resistors: Parallel


The sum of currents in parallel resistors equals the
total current.
Resistors in parallel have the same potential
differences across them.
Resistors: Parallel

The equivalent resistance must always be less than
the smallest resistance in the group of resistors.
Guided Practice


Open books to pg. 743
Sample Problem 20B
Summary Table pg. 742