Firstly turn of the power before this test...Using a resistance or continuity tester you should get the following results:Short circuit: Very low resistance (nearly 0 ohms) or the bell will ring.Open circuit: Very high resistance (Somewhere in the range of Mega ohms) or the bell will not ring.The reason for this is because and open circuit has a gap in it (which has high resistance).The short circuit has wires that are crossed and so has a really low resistance.
First select the correct measurement type. Current is measured in series and most meters have separate inputs for that. Resistance should be measured with the component out of the circuit. Volts in parallel. Be very careful. Best is to be shown how. ANSWER: A meter any meter cannot measure current directly but rather it measure the voltage drop to translate into amperes.
Because an ohmmeter works by putting a potential difference (voltage) across a load and measuring the resulting current (the current will be inversely proportionate to the resistance). In a live circuit there is already current flowing through the load so (at best) the reading will be inaccurate, at worst the meter will be damaged.
Use a multimeter and test if there is a voltage drop or current over the wire circuit.
ammeter
If the circuit is carrying current then that means that the load (resistance) is in the circuit. if an ohm meter is connected in the live circuit then there would be some voltage drop at the ohm meter but as the meter has very less resistance, this would damage the instrument.
No, the circuit should not be energized when checking the resistance of a circuit.
Firstly turn of the power before this test...Using a resistance or continuity tester you should get the following results:Short circuit: Very low resistance (nearly 0 ohms) or the bell will ring.Open circuit: Very high resistance (Somewhere in the range of Mega ohms) or the bell will not ring.The reason for this is because and open circuit has a gap in it (which has high resistance).The short circuit has wires that are crossed and so has a really low resistance.
R, or greek OMEGAAnswerAre you referring to the circuit symbol for resistance, or the quantity symbol?The circuit symbol depends on in which country you live. In the United States, the symbol is a zig-zag. In Europe, the symbol is a rectangle.The quantity symbol for resistance is the italicised capital letter, R.On the other hand, the SI symbol for the unit of measurement of resistance, the ohm, is the capital Greek letter, omega.
No, Plastic is not conductive! I other words plastic can not conduct electricity therefore it can not produce resistance, and resistance is what you need to produce heat. and that heat would melt the plastic. Now if you touch a "live" wire to metal and that metal was grounded ( for example to a cold water pipe) then you would be completing the circuit, then that piece of metal would heat up very rapidly and eventually melt! of-course the smart person would not do this but if you where not so smart be prepared to get burned!!!! BE SMART!!
To measure electrical current using a multimeter, set the dial to the current measurement setting, typically labeled as "A" for amperes. Then, connect the multimeter in series with the circuit you want to measure. Make sure to follow proper safety precautions and never measure current on a live circuit. Read the current measurement displayed on the multimeter screen.
i believe it would short circuit
To check a 120-volt coil, use a multimeter set to the resistance (ohms) mode. Disconnect the coil from any power source, then measure the resistance across the coil terminals; a typical reading should be within the manufacturer's specified range. If the reading is infinite (open circuit) or significantly lower than expected, the coil may be faulty. For live testing, you can measure the voltage across the coil terminals while it’s powered on, ensuring it reads around 120 volts.
An electrical circuit forms a loop. The "live" or hot wire supplies the voltage, which is returned on the neutral. If the hot wire and neutral wire were connected together without a load between them, the circuit would be short out and trip the circuit's protection device.
Meters or feet would be best, depending on where you live.
If a component is hooked into a live circuit, it is likely that the component itself will be damaged.
This depends on the country yo live in. Some countries measure it in gallon and some in liters. 1 gallon = 3 liters.