Question

two kinds of magnets are shown below. magnet 1: switch, coiled wire, iron nail, wire, battery. magnet 2: s, n. cameron works in a junkyard, and he needs a machine that can lift scrap metal and then let go of it. which type of magnet does cameron need, and why? a. cameron needs a magnet like magnet 1 because it can pick up all materials. b. cameron needs a magnet like magnet 2 because it does not need electricity. c. cameron needs a magnet like magnet 1 because it can be turned on and off. d. cameron needs a magnet like magnet 2 because it is stronger than magnet 1.

Explanation:

Magnet 1 is an electromagnet. Its magnetic field can be controlled by turning the current on or off, which allows it to pick up and release scrap metal as needed. Magnet 2 is a permanent magnet and cannot be turned off to release the metal once attracted.

Answer:

C. Cameron needs a magnet like magnet 1 because it can be turned on and off