Download presentation
1
Circuits
2
Series Circuits Big R = Big DV small R = small DV
Current is the same everywhere Voltage gets divided up based on the resistance
3
Parallel Circuits Current gets divided up amongst the resistors
Voltage stays the same
4
SERIES PARALLEL SERIES
5
Resistors in Series…just add up
Resistors in Parallel…add the reciprocals
6
Equivalent Resistance Req = 3W + 1.33W +1W +5W = 10.33W
These two resistors in parallel can be calculated as one resistor = 1W = 2W = 4W = 3W R2,3 = 1.33W Req = 3W W +1W +5W = 10.33W
7
Resistance and Current in the circuit
series Find the Equivalent Resistance and Current in the circuit = 10W parallel = 5W series = 10W I = V/Req = 40.0V/10W = 4A What is the current through the 2.0W resistor? equal resistance…the current divides equally 2A each way
8
Find the equivalent resistance and current
= 40W = 20W = 20W = 40W Find the equivalent resistance and current through the 20W and 8W resistors I = V/Req = 12V/40W = 0.3 A I through 8W resistor = .15 A
9
What if the resistance is not equal in each resistor?
12V 6W 2W How much current is going through the 2W resistor? Calculate the equivalent resistance… 1/Req = 1/6W + 1/2W = .667W-1 Req = 1.5W Calculate the current in the circuit I = V/Req I = 8A The 6W resistor has 3x the resistance than the 2W, so 3x more current will flow through the 2W resistor… (2W gets ¾, 6W gets ¼)
Similar presentations
© 2024 SlidePlayer.com Inc.
All rights reserved.