An electric drill is a power tool that is used to drill holes or drive screws into different materials such as wood, metal, plastic, and concrete. It works by converting electrical energy into rotational motion, which drives the drill bit or screwdriver bit into the material. Electric drills come in a variety of sizes, power ratings, and features, such as corded or cordless, variable speed, hammer action, and reverse function. They are commonly used in construction, woodworking, metalworking, and DIY projects.