What will an ohmmeter read if resistor R3 is disconnected at terminal D?

When a resistor is disconnected from a circuit at a terminal, the measurement across that terminal using an ohmmeter will reflect the open circuit condition. In this scenario, terminal D is where resistor R3 is disconnected. An ohmmeter operates by passing a small current through the resistor being tested, and it measures the resistance based on the voltage it detects.

If R3 is completely disconnected, there is no conductive path for the ohmmeter to measure across terminal D. This results in an infinite resistance reading. In the context of digital ohmmeters, this is often represented as an open circuit, which can generally be indicated by a reading of "1" or "infinity" based on the design of the meter.

Therefore, when considering the reality of the resistor being absent, the ohmmeter would read an open circuit condition, which is often denoted as "1" in binary representation. This is consistent with typical electronic understanding, where a resistance that is essentially non-existent (due to disconnection) yields an infinite or nonexistent conductivity.

In contrast, if the resistor were connected, a finite resistance value would be read, correlating to a "0" in a binary context. This fits into a framework where "0" represents a