Multimeter Operation Procedure (Step-by-Step)

 Here's a simple Multimeter Operation Procedure with a diagram to help you understand how to use a digital multimeter (DMM) for basic measurements like voltage, current, and resistance.

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✅ 

1. Parts of a Digital Multimeter:

Display Screen

Rotary Switch (for selecting measurement mode)

Probe Ports:

COM (Common, black lead)

VΩmA (for voltage, resistance, and small current)

10A or 20A (for measuring high current)

Probes: Red (+) and Black (–)

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🔌 Basic Measurements:

✅ A. Measuring DC Voltage (e.g., battery):

1. Turn rotary switch to "V⎓" (DC Voltage)

2. Insert black probe into COM port

3. Insert red probe into VΩmA port

4. Touch black probe to battery negative and red to positive

5. Read value on the screen

✅ B. Measuring AC Voltage (e.g., wall socket):

1. Set dial to "V~" (AC Voltage)

2. Insert probes (black to COM, red to VΩmA)

3. Carefully place probes in socket

4. Read voltage (usually ~220–240V in India)

✅ C. Measuring Resistance (Ω):

1. Set dial to Ω symbol

2. Disconnect power from the circuit

3. Connect probes across the resistor/component

4. Read resistance value

✅ D. Measuring DC Current:

1. Set dial to "A⎓" or "mA"

2. Insert red probe into 10A (for >200mA) or VΩmA (<200mA)

3. Connect probes in series with the circuit

4. Read current value

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📊 Multimeter Diagram:

Here’s a simple diagram:

____________________________

  |     Digital Multimeter     |

  |                            |

  |   ----------------------   |

  |  |      DISPLAY         |  |

  |   ----------------------   |

  |                            |

  |   [Rotary Switch Dial]     |

  |      (V⎓  V~  A⎓  Ω)        |

  |                            |

  |   ● COM      (Black Probe) |

  |   ● VΩmA     (Red Probe)   |

  |   ● 10A      (High Current)|

  |____________________________|

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