How should a multimeter be set up to measure current?

To measure current with a multimeter, it is crucial to connect the meter in series with the circuit. This configuration allows the current flowing through the circuit to flow directly through the multimeter. When the multimeter is set to measure current, it presents a very low resistance, ensuring that it does not significantly affect the overall current flow, which is essential for accurate readings.

Connecting a multimeter in parallel, as would be suggested by another option, would create a short circuit situation, potentially damaging the multimeter and posing a safety hazard since most multimeters are not designed to handle high currents that could flow through an unintended short. Additionally, setting the multimeter to resistance mode or voltage mode would be inappropriate for measuring current, as those modes are specifically designed for different types of measurements altogether. In essence, for accurate current measurement, a series connection combined with the correct settings on the multimeter is essential.