135 ohms new, and will function properly down to 114 ohms. The chart in the '86-'87 book shows: Empty=110 ohms +/- 7 ohms Full=3 ohms +/- 2 ohms 1/2 full= 32.5 ohms +/- 4 ohms
Ohms can be found by using these formulas. Ohms = Volts/Amps, Ohms = (Volts (squared))/Watts, Ohms = Watts/(Amps (squared)).
To find the conductance using ohms law,you take the inverse of the resistance(/R)
Find out the ohms range it must be within and do an ohms test.
Use the equation that shows the relationship between ohms and the properties that are known.
To calculate the resistance in ohms, you also need to know the voltage. The formula to find the resistance in ohms is R = V^2 / P, where R is the resistance in ohms, V is the voltage, and P is the power in watts.
Resistance is measured in Ohms with an ohmeter.
You must find a resistance value for 0 dB as reference. If 1 Ohm = 0 dB then 10 ohms = 20 dB and 100 ohms = 40 dB.
count up the value of the resistor using the colour bands along with resistor code chart(or it may on the resistor eg. 10kohms, follow this by hooking up an ohm meter(you will have to select ohms, kilo-ohms, mega-ohms whichever applies) , your resistance should appear within the acceptable variable guidelines.. usually 5 to 10 percent(last band or on the resistor itself) count up the value of the resistor using the colour bands along with resistor code chart(or it may on the resistor eg. 10kohms, follow this by hooking up an ohm meter(you will have to select ohms, kilo-ohms, mega-ohms whichever applies) , your resistance should appear within the acceptable variable guidelines.. usually 5 to 10 percent(last band or on the resistor itself)
To find the equivalent resistance of resistors in series, you simply add their resistances together. In this case, the equivalent resistance ( R_{\text{eq}} ) is calculated as follows: [ R_{\text{eq}} = R_1 + R_2 + R_3 = 20 , \text{ohms} + 12 , \text{ohms} + 8 , \text{ohms} = 40 , \text{ohms}. ] Thus, the equivalent resistance of the circuit is 40 ohms.
In electronics, R or resistance is calculated by dividing the voltage by the current, or I/E Here's a good Ohms law chart; http://www.the12volt.com/ohm/ohmslaw.asp
The formula you are looking for is I = sq root of W/R.