Series and Parallel: How We Wire The World
Series and Parallel: How We Wire The World
Series and Parallel: How We Wire The World
PARALLEL
HOW WE WIRE THE
WORLD
A B
Series circuit Parallel circuit
types of circuit
There are two types of electrical circuits;
• When electrons have to flow through one part to get to the next
part
current)
• Total resistance goes UP with each resistor since the current has
• Given
– Vbattery = 12 V
– R1= 50 R2= 100 R3= 100
• Complete the following table
V = I R
1
2
3
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T
PARALLEL CIRCUIT – PROS AND
CONS
Advantages
• The more devices (resistors) in a parallel circuit, does not decrease the
current (does not dim bulbs).
• If one resistor breaks (a bulb goes out) the rest do not.
Problems
• Current doesn’t stay the same for entire circuit
• So energy is used up quicker
• So the total current increases = faster electrons = hotter wire = fire?
WHICH IS BETTER?
SERIES OR PARALLEL?
Paralel
• Given
– Vbattery = 12 V
– R1= 50 R2= 100 R3= 100
• Complete the following table:
V = I R
1
2
3
-----------------------------------------------
T
measuring current & voltage
a)
6V
4A A
V V
A
measuring current & voltage
b)
6V
4A A
V
A
answers
a) b)
6V
6V 4A 4A
6V
4A 4A
3V 3V 2A
4A
6V
2A
VOLTAGE, CURRENT, AND POWER
• One Volt is a Joule per Coulomb (J/C)
• One Amp of current is one Coulomb per second (6.24
x10^18 electrons/second).
• bhsd228.schoolwires.net
• https://education.jlab.org/jsat/powerpoint/0708_electricity.p