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Main functions
Voltage (V): Measures AC (alternating current) and DC (direct current) voltage.
Current (A): Measures electrical current flowing through a circuit.
Resistance (Ω): Measures the resistance of components and wires.
Continuity test: Checks whether a circuit is complete, usually with a beep.
Diode test: Tests the condition of diodes.
Capacitance (F): Available on many digital multimeters to measure capacitors.
Frequency (Hz): Measures the frequency of AC signals.
Temperature: Some models can measure temperature using a thermocouple.
Types of multimeters

Digital Multimeter (DMM)
LCD display
High accuracy
Easy to read
Most commonly used
Analog Multimeter
Uses a moving pointer and scale
Useful for observing changing signals
Less common today
Main parts
Display (digital or analog)
Rotary selector switch
Input terminals (COM, VΩ, A/mA)
Test probes (red and black)
Basic safety tips
Select the correct measurement function before connecting the probes.
Start with the highest range if the value is unknown (for manual-ranging meters).
Never measure resistance on a live circuit.
Ensure the probes are connected to the correct terminals.
Do not exceed the meter's rated voltage or current.
Common applications
Checking batteries
Testing electrical outlets
Measuring electronic components
Troubleshooting wiring faults
Checking fuses and continuity
Diagnosing electrical and electronic equipment

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