Does voltage drop and copper loss are same thing?

Voltage drop and copper loss are not the same thing, though they are related. Voltage drop refers to the reduction in voltage as electrical current flows through a conductor, primarily due to its resistance. Copper loss, on the other hand, specifically refers to the power loss (in watts) that occurs due to the resistance of the copper wire, calculated using the formula I²R, where I is the current and R is the resistance. While both concepts involve resistance, voltage drop focuses on the change in voltage, while copper loss quantifies energy loss as heat.