✔ How To Test A Resistor In A Circuit

How To Test A Resistor In A Circuit

- May 08, 2018

Read the resistor value visually. Determine the actual.

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Using an analog or digital multimeter.

How to test a resistor in a circuit. How well resistors oppose current flow depends on their resistance. For example to measure the resistance of the resistor touch the meter leads to the two leads of the resistor. Resistors can be tested in and out of circuit by measuring their resistance.

Turn the multimeter dial to the resistance setting. Before you can test a resistor you need to know its strength and tolerance. Ordinary resistors obey ohms law where the voltage v is equal to the current i multiplied by the resistance r.

Then adjust the meters calibration knob until the meter indicates 0 resistance. There are two ways to testing resistor such as using the analog and digital multimeter. If you look at a resistor one end should have a gold silver or white band.

How to check a resistor steps in order to test a resistor it is important to first disconnect one lead from the circuit. First you must know the resistor value before you take any measurement. Turn the resistor so that this band is to your right.

Normally if a resistor fail they will either increase in value or open up at all open circuit. Set your analog meter to x1 ohm shorting the probes and calibrate the. Using analog multimeter to test the resistor.

Isolate the resistor from the circuit. How to test a resistor there are two ways of testing a resistor. Next obtain an electrical meter capable of measuring resistance.

Power off the circuit containing the resistor you wish to measure. You can check the resistor resistance with an ohmmeter or digital multimeter. Never measure a resistor in a circuit with a live current running through it.

You will next need to determine the rated value of the resistor. One way to limit this flow is with a resistor. Prepare a digital multimeter dmm to measure the resistor.

How to test resistors steps remove power from the circuit containing the resistor. Testing resistor using the accurate way. Touch the meter leads to the two points in the circuit for which you wish to measure resistance.

Set your meter to an appropriate range. Discharge any capacitors in the circuit by touching the leads of a spare high wattage resistor to the leads.