What is the high side line current as per the calculations?

To understand the correct answer regarding the high side line current, it's important to consider the context in which line currents are calculated in power distribution. The high side line current typically refers to the current flowing on the primary side of a transformer or distribution system, which is usually at a higher voltage level compared to the low side.

In many cases, determining the high side line current will involve analyzing the load, the voltage levels, and using Ohm’s Law (I = V/R) or applying more complex equations depending on the specifics of the transformer or system configuration. If the answer given, 3.5 amps, is the correct one, it indicates that during the calculation, the other values—such as the input voltage and total impedance of the system—led you to find that the current flowing at the high side was indeed 3.5 amps.

This value would align with typical operational ranges for transformers, where the high-side current is lower than the low-side current due to the difference in voltage and impedance. Therefore, the calculations leading to this current must have accurately accounted for these critical factors, proving that 3.5 amps is the calculated line current flowing through the high side of the system.