*Question T7D03:
When configured to measure current, how is a multimeter connected to a component?*  

*Correct Answer is  A: In series*  

### AI Response: (may contain errors)  

To measure current using a multimeter, it must be connected in series with the component. Here's a breakdown of why this is the case and why the other options are incorrect:

1. **Correct Answer: In series**
   - When measuring current, the multimeter must be part of the circuit, allowing all the current flowing through the component to pass through the meter. This is because current is defined as the flow of electric charge, and to measure it accurately, the meter needs to be in the same path as the current.

2. **Why the other choices are incorrect:**
   - **B: In parallel**
     - Connecting a multimeter in parallel would create a short circuit across the component, potentially damaging the multimeter and affecting the circuit operation. In parallel, the multimeter would measure voltage, not current.
   - **C: In quadrature**
     - "In quadrature" refers to a phase relationship, typically used in AC circuits to describe the phase difference between voltage and current. It is not a method of connecting a multimeter.
   - **D: In phase**
     - "In phase" also refers to the timing of waveforms in AC circuits and does not pertain to how a multimeter is connected. It does not apply to the physical connection of a multimeter for current measurement.

3. **Useful Rule of Thumb:**
   - Always ensure the multimeter is set to the correct current range before connecting it in series. This prevents damage to the meter and ensures accurate readings.

In summary, to measure current, always connect the multimeter in series with the circuit component.