2006-10-03 20:06:02 · 9 answers · asked by Alfred E. Newman 6 in Science & Mathematics ➔ Physics
There are various equation for various conditions.
The most common one is V = I x R
The R = V/I
Resistance is voltage divided by current.
2006-10-03 20:21:08 · answer #1 · answered by Sciman 6 · 0⤊ 0⤋
Equation For Resistance
2016-10-03 08:19:30 · answer #2 · answered by ? 4 · 0⤊ 0⤋
How To Work Out Resistance
2016-12-14 15:28:30 · answer #3 · answered by melgoza 4 · 0⤊ 0⤋
This Site Might Help You.
RE:
How do you work out Resistance? the Equation?
2015-08-20 06:21:19 · answer #4 · answered by Derk 1 · 0⤊ 0⤋
Electrical ?
I=e/r Where I = Amps E = Volts R= Resistance in Ohms.
Mechanical?
W sine. theta Where W = Weight Sine = angle if inclined
Theta the weight in grams needed to overcome stability on a flat plane as a % of the weight.
Fluids?
S.V/ Can't remember too old.
2006-10-03 20:23:49 · answer #5 · answered by Anonymous · 0⤊ 1⤋
The resistance of a conductor is the length over its cross sectional area by the resistivity of the conductor. R=pL/A where p = rho the resistivity of the conductor
2016-03-16 01:29:44 · answer #6 · answered by Anonymous · 0⤊ 0⤋
resistance can be derived by ohms law but the resistance atually is the difficulty that opposes to current flow. it is propotional to a temp coefficient since temperature increases vibration and it get smaller as the area of conductoin increases since there is a greater path for the electrons to travel. the excact equation of resistance is :
blending area coefficient of resistivity etc
R = Ro[1 + a(T − To)]
where a= (r-r0) / ro (T-To)
r: resistivity
ro:resistivity at reference temperature =25 degres etc.
for better reading and better english
http://www.phys.uvic.ca/jirasek/courses/Phys216/Lectures/P216-L17-27-4-6.pdf#search='equation%20electrical%20of%20resistance%20temp%20coef'
2006-10-03 21:59:55 · answer #7 · answered by Emmanuel P 3 · 0⤊ 1⤋
Ohms law
V / I = R
this is true for a DC circuit.
AC is a bit more complicated
2006-10-04 00:56:33 · answer #8 · answered by Vinni and beer 7 · 0⤊ 0⤋
V(olts) = I(current) * R(esistance)
Ohms law
2006-10-03 23:38:13 · answer #9 · answered by Anonymous · 0⤊ 0⤋
Ohms law
Save me a lot of finger work try these:
http://www.the12volt.com/ohm/ohmslaw.asp
http://www.listenhear.co.uk/ohms_law.htm
2006-10-03 20:23:03 · answer #10 · answered by philipscottbrooks 5 · 0⤊ 0⤋