Turn on the multimeter.

Set the dial to the correct voltage type:

• DCV to measure batteries, DC circuits

• ACV to measure wall outlet voltage

Connect the probes:

• Red probe to VΩmA port

• Black probe to COM port

Touch the probes across the two points you want to measure.

• Red probe to the positive side

• Black probe to the negative/ground side

Read the value on the display.

Turn on the multimeter.

Set the dial to the correct current type:

• DCA to measure current in DC circuits (e.g., batteries, electronics).

• ACA to measure current in AC circuits (e.g., household appliances).

Connect the probes:

• Red probe to the 10A or mA/μA port (depending on the expected current range).

• Black probe to the COM port.

Break the circuit and place the multimeter in series with the load:

• Current must flow through the meter, unlike voltage measurement.

• Connect the red probe to the side closest to the power source.

• Connect the black probe to the load side (return path).

Read the value on the display.

Turn off the power to the circuit or component.

• Never measure resistance on a live circuit.

Turn on the multimeter.

Set the dial to the resistance (Ω) mode.

• Some meters have ranges; choose the appropriate one.

• Many digital meters auto-range automatically.

Connect the probes:

• Red probe to the VΩmA port.

• Black probe to the COM port.

Place the probes across the component or points where resistance is to be measured:

• Polarity does not matter.

• Ensure no parallel paths affect the reading.

Read the resistance value on the display (in ohms, Ω).