What is the main purpose of increasing voltage in electrical transmission?

Increasing voltage in electrical transmission primarily serves to minimize energy loss over distance. When electricity travels through transmission lines, it encounters resistance, which leads to power losses in the form of heat. The amount of power loss is directly related to the current flow and the resistance of the wires. By increasing the voltage, the same amount of power can be transmitted at a lower current. Since power loss is proportional to the square of the current (I²R losses), reducing the current significantly reduces energy losses. This efficiency gain is crucial in the design of electrical grids, ensuring that energy reaches consumers with minimal waste.

In contrast, the other options don't address the primary goal of voltage increase as effectively. Decreasing battery life is unrelated to transmission voltage; improving conductor performance is more about material properties than voltage levels; and stabilizing generator output pertains to regulating supply rather than the mechanics of transmission efficiency. Thus, the correct answer aligns perfectly with the principle of efficient electrical energy transmission over long distances.