# How to Read a Multimeter

Written By Thurman Schinner

How do you read a multimeter for dummies?

What do the symbols mean on a multimeter?

How do you use a multimeter step by step?
In this equation, V represents voltage, I represents current, and R represents resistance. When referring to the units volts, amps, and ohms, we use the symbols V, A, and ?, as explained above.
What do multimeter settings mean?

What does M mean on multimeter?

3. Measuring Voltage

Turn your multimeter dial to V to mean voltage.
Then insert the black lead into the common jack in the multimeter. Also, insert the red lead into the volt jack.
?Try connecting the test leads to the circuit, starting with the black then the red one.
Now read the measurement which is displayed.

What is the symbol for continuity?

Setting the Dial on Your Multimeter
If your multimeter is ?auto-ranging,? which means it automatically detects the scale of your measurements, its dial will be relatively simple. For example, if you?re measuring a 15 V circuit and your multimeter has 2 V, 20 V and 200 V settings, you?d choose the 20 V setting.

Is a house AC or DC?
The selection knob allows the user to set the multimeter to read different things such as milliamps (mA) of current, voltage (V) and resistance (?). Two probes are plugged into two of the ports on the front of the unit. COM stands for common and is almost always connected to Ground or ?-? of a circuit.
What does 0 l mean on a multimeter?

Is a battery AC or DC?

diode symbol

Which is dangerous AC or DC?

Continuity: Usually denoted by a wave or diode symbol. This simply tests whether or not a circuit is complete by sending a very small amount of current through the circuit and seeing if it makes it out the other end.

Why DC is not used in homes?

Are phones AC or DC?
Home and office outlets are almost always AC. This is because generating and transporting AC across long distances is relatively easy. At high voltages (over 110kV), less energy is lost in electrical power transmission.
Can DC eliminate you?

closed circuit has

Why is DC so dangerous?
On a digital multimeter, infinity reads ?0. L.? On a VOM, ?zero? means a closed circuit has been detected. The display needle moves to the far right side of an analog scale; ?zero? reads ?0.00? on a digital VOM.
Which current is powerful AC or DC?
Batteries and electronic devices like TVs, computers and DVD players use DC electricity ? once an AC current enters a device, it?s converted to DC. A typical battery supplies around 1.5 volts of DC.
What happens if amps are too high?
Alternating current (A.C) is five times more dangerous than Direct current (D.C). The frequency of the alternating current is the main reason for this severe effect on the human body. The frequency of 60 cycles is in an extremely harmful range. At this frequency, even a small voltage of 25 volts can eliminate a person.
Can 24V DC eliminate you?
Direct current is not used at home because for the same value of the voltage, DC is more lethal than AC since direct current does not go through zero. Electrolytic corrosion is more an issue with direct current. DC inductors are more complicated. It requires commutators, electronic switches and brushes.
How many watts is 220 volts?