An electromagnet is the most powerful type of magnet there is. It is a magnet with a current running through it that can be turned on and off. Why might it be useful to be able to turn the electromagnet on and off?(1 point)%0D%0AResponses%0D%0A%0D%0Ato not waste electricity%0D%0Ato not waste electricity%0D%0A%0D%0Ato latch onto and let go of objects%0D%0Ato latch onto and let go of objects%0D%0A%0D%0Ato control the strength of the magnet%0D%0Ato control the strength of the magnet%0D%0A%0D%0Ato reduce wearing out of the magnet over time
