0
What else can I help you with?
Do you unplug before measuring resistance?
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.
How do you calculate contact resistance?
Resistance is resistance , no matter if it is contact resistance or any other resistance. And formula is R = V / I.
If voltage equals resistance x current then?
Ohm's Law: Voltage equals Resistance times Current Given any two, you can figure out the other using simple algebra.
Why the resistance of a capacitor is infinite when measures with an ohmmeter?
The typical ohmmeter measures DC resistance by providing DC current and measuring the voltage drop accross the resistor. By definition, the 'ideal' capacitor is an open circuit to DC current and voltage. By definition, an open circuit has infinite resistance. Of course, real-world capacitors are not ideal. They have a very high parallel leakage resistance and a very small series resistance. And, different meters can measure different ranges of resistance. So, you may not get an infinite/overload measurement on some capacitors with some meters. You may get a very high resistance instead. If so, you are not really measuring the resistance of the 'capacitor', but rather that of the imperfections in the component manufactured to be a capacitor. ANSWER: The ohmmeter battery will charge the capacitor in 5 time RC after that it quirts there is no more current flow. Any body that claim to be able to check resistance of a capacitor i just a wannabe
How do you access final methods from Outer Classes?
The final modifier has nothing to do with access. If your "outer" classes can see the method, they can access them just like any other methods.
Do you unplug before measuring resistance?
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.
Where do you set the dial when you are measuring resistance on house current?
YOU DO NOT "measure resistance on house current".You never measure resistance of anything that has any path to any source ofpower ... not to a wall outlet, a battery, a windmill, a solar panel, etc. You onlymeasure resistance when all power is REMOVED from the circuit or componentyou're measuring. Then, the range you choose for the ohmmeter depends onthe component or circuit you're measuring, NOT on how it's powered when it'sturned on.
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.
How do you calculate contact resistance?
Resistance is resistance , no matter if it is contact resistance or any other resistance. And formula is R = V / I.
What are the three methods to determine the value of a resistor?
Basically you can either read the resistance that is printed on the resistor (with a special color code, which you would have to learn), or you can use Ohm's Law, by measuring a voltage through the resistor and the corresponding current. I am not aware of any third method.
Why wheatstone bridge is unsuitable for measurement of law resistance?
The Wheatstone bridge is unsuitable for measuring low resistance because it relies on comparing the unknown resistance with other resistors in the bridge circuit, which limits its sensitivity for low resistance values. The voltage drop across the low resistance would be too small to provide accurate readings due to the small voltage differences involved. Additionally, any small variations in the resistors can greatly affect the accuracy of the measurement for low resistances.
What can affect the size of an applied force?
Friction or any other resistance.
How does a megohmmeter work?
A megohmmeter, also known as a megger, works by applying a high voltage to the insulation of a material and measuring the resistance to the flow of current. By measuring the resistance, the megohmmeter can determine the condition of the insulation and whether any deterioration or defects are present. This helps in identifying potential faults or weaknesses in the insulation before they cause electrical issues.
Why do ammeter resistanse is very small?
An ammeter with a large resistance will affect the circuit that it is trying to measure. The ideal ammeter (or any measuring tool) should not affect what is being measured.
What are the recommended methods for measuring and maintaining optimal moisture levels in drywall?
The recommended methods for measuring and maintaining optimal moisture levels in drywall include using a moisture meter to check the moisture content regularly, ensuring proper ventilation to prevent moisture buildup, and promptly addressing any leaks or water damage to prevent excess moisture.
What does for shadowing mean?
shadowing in general is when two variables/methods or any other element has same name and any one of the both can shadow( in OOP case override) the behavior of the other one. garimashadowing in general is when two variables/methods or any other element has same name and any one of the both can shadow( in OOP case override) the behavior of the other one. garimashadowing in general is when two variables/methods or any other element has same name and any one of the both can shadow( in OOP case override) the behavior of other. garima
Passwords are common for form authentication. Can you think of any other methods of authentication?
name and other information
