Final answer:
The statement about an op-amp differential amplifier using resistors with ±5% tolerance is incomplete without context. While resistors with the same tolerance can be used in such amplifiers, other design considerations must also be accounted for optimal performance.
Step-by-step explanation:
The statement about an op-amp differential amplifier being built using four identical resistors each having a tolerance of ±5% is incomplete and lacks a definitive true or false quality without additional context. This is because a differential amplifier can be built using resistors with the same tolerance, but the statement does not clarify whether this design choice impacts the functionality or performance of the amplifier. In practice, differential amplifiers often use tightly matched resistors to ensure balanced operation; however, the tolerance specification alone does not determine whether the circuit is correctly designed or will function as intended.
It is essential to understand that in electronic circuits, resistors with a certain tolerance indicate the range within which the actual resistance can vary from its nominal value. For precision circuits like differential amplifiers, using resistors with the same tolerance can be important, but other factors such as the matching of resistor values are also crucial for the circuit to perform optimally.