Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to use a digital multimeter [title] Connect the multimeter to the circuit. [step] Insert the black probe into the common terminal and the red probe into the terminal marked for measuring volts and ohms. The terminal may also be marked for testing diodes.

Ending1: [substeps] The meter should be battery-powered at all times, but you should be able to read a meter online or use a thermometer if you are using an electric meter. [title] Break a circuit in a meter thermometer. Ending2: Call your biotechnical workers for more information. [substeps] Hold the meter straight up against the center pin marked for charging wires. Ending3: [title] Attach the digital multimeter to the flat terminal. [step] To test volts, simply insert the wire into the terminal marked for measuring volts. Ending4: [title] Twist the selector knob to set the multimeter to measure resistance. [step] This may be represented by the greek letter omega, which stands for ohms, the unit of measurement for resistance.

Answer format: ending1/ending2/ending3/ending4