O.K, so i have this worksheet and it has these problems where i have to calculate the resistance between points. it gives u the value of resistors (500 on the first one) and (1 k (ohmes symbol)) so is their an equation or something?
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6 Comments
If the resistors are connected in series then the resistance between the two points = R1 + R2 = 500 ohms + 1,000 ohms = 1,500 ohms or 1.5 k ohms.
If the resistors are connected in parallel then the resistance between the two points = (R1 x R2) / (R1 + R2) = (500 ohms x 1,000 ohms) / (500 ohms + 1,000 ohms) = (500,000 sq. ohms) / (1,500 ohms) = 333.33 ohms.
for resistance in series the formula is R=R1+R2+——————-+Rn
and for the parallel the formula is 1/R=1/R1+1/R2+—————-+1/Rn.
for your question Resistance in series R= 500+1000=1500Ohms.
for Resistance in parellel R= 500×1000/(1500)==333.33 Ohms
Catherine W.
Yes, there are formulas to calculate resistance.
SERIES:
R total = R1 + R2
R total = 500 ohms + 1,000 ohms
R total = 1,500 ohms
PARALLEL:
1 / R total = 1 / R1 + 1 / R2
1 / R total = 1/500 + 1/1000
1 / R total = 2/1000 + 1/1000
1 / R total = 3/1000
R total = 1000/3
R total = 333 ohms
or
1 / R total = 1/500 + 1/1000
1 / R total = .002 + .001
1 / R total = .003
R total = 1 / .003
R total = 333 ohms
See the reference for a fuller explanation:
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ANSWER FOR ADDITIONAL DETAILS QUESTION
k means 1,000
1k ohms = 1,000 ohms
2.2 k ohms = 2,200 ohms
You reduce it bit by bit. Take any parallel resistors and use the 1/R formula. Take any series ones and add them together. Continue until you get down to the simplification desired.
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Series Resistances are calculated R =R1+R2+R3…+Rn Parallel Resistances are calculated 1/R=1/R1 +1/R2+1/R3… +1/Rn so figure out which resistance are in series then calculate the R then do the same for Parallel ones.
Your question is making no sense at all .