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A series DC motor has to have a starting resistor to limit the current flow before the speed builds up.

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10y ago

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What is the function of vom in electronics?

Measure voltage, resistance, and on some meters current. Typically used as a troubleshooting aid.


Why you use mega ohm resistance in small electronics circuits?

Each resistor in a circuit performs a well defined function and its resistance is calculated by the circuit designer as the voltage across it divided by the current through it. Sometimes the value of resistance required is over 1,000,000 hms.


What are the importance of resistance?

Resistance is crucial in various contexts, such as electrical engineering, medicine, and social movements. In electrical systems, resistance regulates current flow, ensuring devices function safely and efficiently. In medicine, understanding microbial resistance helps in developing effective treatments against infections. Additionally, social resistance plays a vital role in challenging injustices and fostering change, highlighting the power of collective action in shaping societies.


Is the resistance of the inductor is zero?

The power consumed by an inductor is not zero since it's resistance is not zero either. The power consumed is just too minimal that it can be ignored. What the inductor does is, during one half of the Current's sinusoidal waveform, it stores energy in the form of magnetic flux. During the next half,it discharges the stored energy into the circuit by losing the magnetic field. Hence,they say it doesn't consume power. If the inductor's resistance was significant then you will see that it will consume power. Resistance and Reactive resistance are two different things.


Is potentiometer and Thermistor are variable resistors. How please explain?

A: A potentiometer is a manual device to change the resistance A thermistor changes as a function of environment temperature

Related Questions

What is the main function of the resistance band workout?

The main function of the resistance band workout is to gain resistance in working out. It will give you different results then not using resistance in your work out.


What is a difference between DC and ac resistance and expline DC resistasce?

DC is just direct current into a resistance it is a linear function. AC if the resistance is non reactive it would be the same linear function.


Resistance to blood flow through blood vessels is a function of?

capillaries


What is the function of airplane nose?

The function of the nose is to give a certain amount of streamlining, so the aircraft has less wind resistance


Which electrical device must have high resistance in order to function properly?

voltmeter


Why is the resistance vs current graph is not linear?

resitance is inversly proportional to current when (v) is kept constant <><><><><> Because resistance is a function of temperature.


What is the resistance value?

Electrical resistance is measure in Ohms. A function of voltage divided by current. It is also dependant on the length and cross sectional area of the conductor.


When does diode acts as resistance?

When it is forward biased and, in the case of a zener diode, when it is reverse biased as well. It just is not a linear resistance type of device, and the apparent resistance changes as a function of the applied voltage or current.


How much is the resistance when the function switch is set to x1?

The resistance when the function switch is set to x1 in a multimeter can vary depending on the specific model. Typically, when set to x1, the multimeter will measure resistance up to 200 ohms. Consult the user manual for your specific multimeter for more accurate information.


Why the dynamic resistance of a zener diode different from its static resistance?

The dynamic resistance of a diode, be it zener or otherwise, will be different from its static resistance because a diode is not a resistor, and resistance is not a function of current flow. It is a diode, and a diode has its own characteristic voltage to current curve, forward and, in the case of a zener, reverse.


How do you measure the unknown resistance?

You can measure an unknown resistance by using a multimeter set to the resistance measurement function. Connect the unknown resistance in series with the multimeter and apply a known voltage across them. The multimeter will display the resistance value based on the voltage and current readings.


What must an ammeter be connected to?

To a very small resistance so a mv can be measured as a function of amperes.