Wikipedia:
http://en.wikipedia.org/wiki/Non_Newt...
Recorded at Barcelona, Spain. TV Show: http://www.cuatro.com/microsites/el_h... pool filled with nonnewtonian fluid.mov
Total Resistance Parallel Circuit
Circuits & Total Resistance  Flash
[
HTML5 ]
LearningConnections Clipart
Since I_{T} = I_{1 }+ I_{2 }+ I_{3} + I_{4 }+……
On Reference Table
R_{T}  Total Resistance A.K.A. "Equivalent Resistance"
Ex 3) Find the total resistance for 3 resistors of 2.0 ohms, 5.0 ohms and 2.0 ohms connected in parallel.
1/R_{T} = 5/10 Ω + 2/10 Ω + 5/10 Ω 1/R_{T} = (5 + 2 + 5)/10
1/R_{T} = 12/10
R_{T} = 10/12 ohms
R_{T } = .83 ohms
[
HTML5 ]
Why?
Every time you add a resistor in parallel,
you add another branch for current,
so you create more current.
This reduces the
total R.
Total Resistance Equation #2
Ex 4) Resistors of 3.0 Ω, 6.0 Ω, 9.0 Ω
are connected in parallel.
Find combined R
1/R_{T} =
1/3.0 Ω + 1/6.0 Ω + 1/9.0 Ω = (6.0 + 3.0 + 2.0)/18. = 11./18.
R_{T} = 18./11. Ω
= 1.6 ohms
Ex. 5)
a) Find the equivalent resistance for this parallel circuit
1/R_{T} = 1/2.0 Ω + 1/4.0 Ω
1/R_{T }= 3.0 Ω/4.0 Ω
R_{T }=4.0 Ω/3.0 Ω
= 1.3 ohms
b) Find I_{T} (Current coming out of the source)
V_{T} = I_{T}R_{T}
12. V = I_{T}(1.3 ohms)
I_{T} = 9.0 amps
c) Find the potential drop (V) across R_{1} & R_{2}
V_{T} = V_{1} = V_{2} = 12V
©Tony Mangiacapre.,
 All Rights Reserved [Home]

