The output voltage of an op amp with V+ 2.5V and V- not connected will depend on the specific op amp and its characteristics. In general, the output voltage will be close to the supply voltage, but may not reach it exactly. This is known as the saturation voltage of the op amp.
Yes, it is possible for the output voltage of an op amp with V+ 2.5V and V- not connected to exceed 2.5V. This can occur if the op amp is operating in an open loop configuration or if there is a high gain in the feedback loop.
In a typical op amp circuit, both the V+ and V- inputs are connected to a power supply, which sets the operating range of the op amp. When V- is not connected, the op amp is essentially operating in an open loop configuration, which can result in a higher output voltage and potential instability.
Not connecting V- in an op amp circuit can result in a higher output voltage and potential instability. This is because the op amp is operating in an open loop configuration and is not being properly controlled by the V- input.
It is not recommended to use an op amp with V+ 2.5V and V- not connected in a circuit. This can result in unstable or unpredictable behavior. It is important to properly connect both inputs of an op amp to ensure proper operation.