Can you use the ethernet plug with cable to see the computer screen on a TV?

No, you cannot directly use an Ethernet cable to transmit video from a computer to a TV. Ethernet cables are designed for network connections, not for video signals. To display a computer screen on a TV, you typically need an HDMI cable or other compatible video output method. Alternatively, you could use screen mirroring or streaming devices if the TV and computer support those features.