While the idea of using the Earth's geothermal heat to generate electricity and heat water is valid, building a very long copper rod deep into the ground to reach the magma would not be a practical approach. There are several reasons for this:
Extreme temperatures: The Earth's mantle, where magma exists, reaches temperatures of thousands of degrees Celsius. Copper has a relatively low melting point, around 1,083 degrees Celsius. Therefore, a copper rod would not withstand the extreme heat and would melt or degrade long before reaching the magma.
Drilling challenges: Reaching the magma would require drilling through many kilometers of solid rock, which is an enormous engineering challenge. Current drilling technology can reach depths of several kilometers, but it's nowhere near reaching the magma.
Volcanic activity: The Earth's mantle and magma chambers are typically found near tectonic plate boundaries and areas of volcanic activity. These regions are unstable and dangerous, making it impractical to drill deep into the ground.
Instead of trying to reach the magma directly, geothermal power plants typically extract heat from shallower sources, such as hot water or steam reservoirs located a few kilometers below the surface. This can be achieved by drilling deep wells and using heat exchangers to transfer the geothermal energy to a working fluid, which then drives turbines to generate electricity.
Geothermal energy is a viable and environmentally friendly renewable energy source, but it requires careful planning and utilization of existing geothermal resources rather than attempting to reach the Earth's magma.