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Yes. Measuring resistance involves imposing a small current through a device and measuring the voltage drop. If there were any other source of voltage, the reading would be in error. You could also damage the ohmmeter if there were an external voltage source. You should also take the device out of circuit before measuring it, so as to not bias the results by the resistance of other devices in the circuit. It all depends on the situation, for which you are responsible for evaluating before you start.
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Why isn't resistance constant?
If measuring resistance of materials or resistors by themselves(not soldered into a circuit board) resistance is constant. If measuring resistance of a circuit then it could fluctuate with the components functioning in the circuit.
When measuring resistance with an ohmmeter?
Yes.
The standard unit of eletrical resistance is?
The standard measuring unit for resistance is ohm.
When measuring resistance where does the red cord go?
For simple resistance measurements it usually doesn't matter.
Anderson Bridge for measuring inductance and resistance?
yes.it is used to find self-inductance and internal resistance
Why isn't resistance constant?
If measuring resistance of materials or resistors by themselves(not soldered into a circuit board) resistance is constant. If measuring resistance of a circuit then it could fluctuate with the components functioning in the circuit.
Unit for measuring resistance?
" Ohm "
When measuring resistance with an ohmmeter?
Yes.
What is the unit for measuring electric resistance?
ohms.Ohm is the measurement of resistance. Ω
The standard unit of eletrical resistance is?
The standard measuring unit for resistance is ohm.
Measuring instrument for resistance?
OHM-meter.
What was the applications of galvanometer?
It can be used to form ammeter measuring the current intensity , Voltmeter measuring the potential difference , ohmmeter measuring the resistance.
When measuring resistance where does the red cord go?
For simple resistance measurements it usually doesn't matter.
Anderson Bridge for measuring inductance and resistance?
yes.it is used to find self-inductance and internal resistance
How do you measure armature resistance practically?
by using measuring meter
What checks should be done to an electrical measuring device before attempting to measure electrical resistance?
Some of the checks that can be done to an electrical device before checking electrical resistance include the proximity of other magnetic fields and other electrical circuits. Measure electrical resistance while at a safe distance from strong electrical circuits.
What measures electrical resistance?
an ohm meter OR multimeter is used to measure the electrical resistance...
