What is the voltage reading when the selector is in the 30 DCV position?

In this context, when the selector is in the 30 DCV position, it indicates that the multimeter is set to measure voltage in a range that allows for a maximum reading of 30 volts in direct current (DC). The answer of 2 VDC implies that the measured voltage in the circuit is 2 volts, which is within the permissible range of the 30 DCV setting.

When using a multimeter, each setting corresponds to a certain range of measurable values. A reading of 2 VDC means that the voltage present in the circuit being tested is 2 volts. This reading is clear and accurate within the selected range and reflects the basic functionality of measuring electrical voltage.

Different voltage readings during measurement (like 3 VDC, 5 VDC, or 4 VDC) fall outside the stated reading of 2 VDC and may not accurately reflect the actual condition of the circuit under test at that moment if chosen as the answer. Thus, 2 VDC correctly indicates a plausible and valid voltage measurement under that selected range.