Dennis doesn't believe in electromagnetism so he makes an electromagnet to prove his teacher wrong. To his surprise, the electromagnet works and he's able to pick up metal objects with it. Even still, he's not satisfied with his electromagnet because it's very weak. What can he do to make it stronger? Drag the best answer into the white box.

Question

Dennis doesn't believe in electromagnetism so he makes an electromagnet to prove his teacher wrong. To his surprise, the electromagnet works and he's able to pick up metal objects with it. Even still, he's not satisfied with his electromagnet because it's very weak. What can he do to make it stronger? Drag the best answer into the white box.
DRAG & DROP THE ANSWER
use a plastic nail
wrap the wire around the nail less times
use a weaker battery
use a stronger battery
glue the wire to the nail
Note: Use CTRL+D to drag the option via keyboard

GPT-4o mini · Answer

use a stronger battery