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Why is it that nominal resistance is not always the same as the measured value?
Wiki User
∙ 13y ago
The last color code on the resistor is the tolerance marking it can be from zero up to 10% and higher , then there is other resistances that will influence the measurement, like meter probe tips and even the resistance in the probe wire especially on lower value resistors one can test it by connecting the two probes it is almost impossible to get a zero reading
Wiki User
∙ 16y ago
Wiki User
∙ 14y agoCurrent in each branch of a parallel circuit is always less than that of a comparable series circuit; this is because the current flow is divided through the branches, and each receives less according to its resistance. Resistance in each branch will be the same as if it was a series circuit, but the total resistance of the circuit will be lowered according to the equation 1/Rtotal = 1/R1 + 1/R2 + ..
Wiki User
∙ 13y agoA: Resistors comes with all kinds of precisions +/- 5% is typical but that the can be 0.001% it really depends on the application for the precision required.
Wiki User
∙ 16y agomaybe eddy currents
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Does measured value of resistance match the calculate value of resistance?
what is the diference betwean calculated and maesured value
Why the color coded value of a resistor is differ from the value read from the tester?
The color bands show the nominal resistance. The actual resistance is within some percentage (tolerance) of the nominal resistance, so the measured resistance is close to the nominal but not exactly the same. Also resistance varies with factors like temperature and age of the device.
What is the value of amperes for 100 volts at constant resistance?
V = I*R, so take 100 volts and divide it by the value of the resistance to get the current. Current is measured in amperes.
What happens to the total resistance of a series circuit when another resistor is added?
Simply put, the purpose of a resistor is to 'resist' the flow of current. Ohm's Law tells us that for a given voltage, the larger the resistance, or value of that resistor, the lower the current that will flow. Ohm's Law states that I (current) = E (voltage) / R (resistance) - where current is measured in amps, voltage is measured in volts and resistance is measured in ohms.
What should be the resistance value of healthy earth pit?
what is the resistance value of a healthy earth pit
Is resistor measured in amps?
No, a resistor isn't measured at all. A resistor has a quality called "resistance" - and that value is measured. Resistance is measured in Ohms.
Does measured value of resistance match the calculate value of resistance?
what is the diference betwean calculated and maesured value
What is resistence tolerence?
The typical spread (deviation) from the nominal value of the resistance of several resistors.
Why the color coded value of a resistor is differ from the value read from the tester?
The color bands show the nominal resistance. The actual resistance is within some percentage (tolerance) of the nominal resistance, so the measured resistance is close to the nominal but not exactly the same. Also resistance varies with factors like temperature and age of the device.
What does Uo stand for?
U0 stands for the nominal rms-value of the line potential measured with respect to earth.
Difference between nominal and real variable?
A nominal variable is a variable measured in current dollars (the value of the dollar for the specific period discussed), and a real variable is a variable measured in constant dollars (the value of the dollar for the base period). That is, a real variable adjusts for the effects of inflation.
What is the value of amperes for 100 volts at constant resistance?
V = I*R, so take 100 volts and divide it by the value of the resistance to get the current. Current is measured in amperes.
Is there any difference in measured and calculated value of resistance?
yes , there is a difference because there is a tolerance
What is the absolute value always measured in?
Non-negative real numbers.
Why resistor should disconnected from the circuit when measured the value of resistor?
if not disconnected you will measure the resistance of the circuit in parallel with the resistor.
What the function of tolerance for resistor colour code?
Tolerance indicates how much the measured value of a resistance is different from its theoretical value, and it is calculated using percentages.
What are nominal values?
Nominal values are the values that a component is specified to be. For example, the nominal value of a 10K resistor is 10K. Its actual value may vary, though, based on its tolerance.
