What Is Multimeter ?

How Multimeter can help measure the values of electrical components?

This electronic device has two wires viz. black which is the negative side and the red wire is the positive side. These wires are inserted in the terminals on the millimeter. The knob is used to indicate the values (voltage calculation and resistance values, current flowing in the circuit). We need to rotate the knob to check the values like the continuity of wires, voltage of the battery, the voltage in the circuit, and value of resistors.

Components Required In Multimeter

IMAGE

COMPONENT

QUANTITY

Snap Circuits

1

Multimeter

1

Other Components Required

Base Grid: The base grid works like the printed circuit boards that are found in most electronic products. It is a platform that is used to mount the parts and wires for circuit building.

Snap Wires: The blue snap wires are the wires used to connect one component with another component. These wires are used to transport electricity. Snap wires come in different lengths so that the orderly arrangement of connections can be made on the base grid. These wires have numbers 1,2, 3, 4, and 5 on them depending on the length of the wire connection required.

LED: LED (light-emitting diode) is a semiconductor device that emits light when an electric current flows through it. When current passes through an LED, the electrons recombine with holes emitting light in the process. LEDs allow the current to flow in the forward direction and blocks the current in the reverse direction.

Batteries: Only 1.5V AA type, alkaline batteries should be used for the project. You should insert batteries with the correct polarity. The batteries are non-rechargeable and should not be recharged. Check for old and new batteries, you should not mix the old and new batteries.  

Resistors:  Resistors are used to resist the flow of electricity and control or limit the electricity in a circuit. Increasing circuit resistance reduces the flow of electricity. Resistors are used throughout electronics to limit the amount of current that flows. We have taken different resistors to check their values.

Building Guide Of Multimeter

Step 1: Take out all the necessary components from the snap circuit box. We will measure the values of all the components in the kit.

Step 2: To check the continuity of a wire, rotate its knob to the continuity position. If a wire is not broken it will produce the beep sound. However, if it is broken, it will not produce a beep sound.

Step 3: To check the DC voltage of a battery, rotate  its knob  to the voltage (V) section as shown below:

Now, connect the positive lead (red color) to the positive terminal of a battery and the negative lead (Black color) to the negative terminal of a battery.

If the value on a multimeter is showing either 1 or 0 then, change the value set on a multimeter by rotating the knob up or down.

Step 4: To check the DC current of a battery, rotate the knob of a multimeter to the current section, as shown below:

Now, connect in series with a battery and a multimeter, as shown below.

If the value on a multimeter is showing either 1 or 0 then change the value set on a multimeter by rotating the knob clockwise or anticlockwise.

Step 5: To measure resistance, rotate its knob to the resistance(ohms) section, as shown below:

Now, connect both the terminals of a resistor with both the leads of a multimeter respectively, as shown below:

If the value on a multimeter shows either 1 or 0 then change the value set on a multimeter by rotating the knob up or down.

We hope, you have now got a better understanding of how a multimeter works and how it helps in measuring the values of the electronic components.