Measuring Voltage, Resistance and Current with the Multimeter



Measuring Voltage, Resistance and Current with the Multimeter
• Measure the resistance of the 20ω resistor
• Measure the voltage of the AA cell
• Measure the current in a basic circuit 


Measure the resistance of the 20ω resistor: keeping in mind the end goal to zero the meter, short the test leads by associating them together. At that point change the OHMS ADJUST handle (situated to one side of focus of the MMM) so that the meter peruses 0 ohms; the needle is then at its most extreme diversion. Set the range selector switch on the MMM to the RX1 territory. Associate the test prompts to the resistor. Measure the resistance. You might need to make other resistance estimations. For instance make a thick line with a #2 pencil and measure the resistance of the stamp. 
 Measure the voltage of the AA cell: Set the range selector switch on the MMM to the 5 DCV extend. Put the AA cell in the battery holder. Interface the test prompts to the leads from the holder. Measure the voltage. 
 
Measure the current in a basic circuit: First set the range selector switch on the MMM to the 250mDCA territory. Make a straightforward circuit comprising of the 20ω resistor, the AA cell, and the MMM. You can do this by associating the red lead of the MMM to the red lead (furthermore, +) of the AA cell holder. Utilize a clasp prompt to interface the dark lead (less, - ) of the AA cell holder to one end of the 20ω resistor. Interface the dark lead of the MMM to the next end of the 20ω resistor. Measure the current in the circuit. What impact do you think the MMM has on the circuit

Meter Damage
Abstain from dropping the meter. Keep its range switch on zero when it is not being used. This damps the movement of the curl and needle—you can see this by pivoting the case forward and backward in a flat plane and contrasting the needle movement and the switch on a voltage scale and on OFF. On the other hand: set the meter on the RX1K, interface the test leads and note the time that the needle takes to come back to zero when the leads are detached. Contrast that time and the time it takes the needle to come back to zero when the leads remain associated however the range is changed from RX1K to OFF.

Other than the wire, the moving curl is ensured by resistors and a couple of consecutive diodes over its windings. This implies it's difficult to harm the meter curl aside from the reaches with low resistance where resistors can be harmed by intemperate streams (RX1 and 250mA territories). Be that as it may, it's great practice to begin with high ranges, and not to gauge the resistances of segments that are wired into circuits, particularly if power is on.

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