A current of 0.1 to 0.2 volts is often misunderstood, as voltage represents potential difference rather than current itself. The discussion emphasizes that without context, such as its application in amplifiers or transistors, this voltage range lacks inherent significance. Voltage is defined as the potential difference, while current is calculated using the formula current equals voltage divided by resistance. The conversation highlights the need for specificity when discussing electrical concepts. Understanding these distinctions is crucial for accurate communication in electronics.