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.