Chemistry

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) 1to not waste electricityto control the strength of the magnetto reduce wearing out of the magnet over timeto latch onto and let go of objectsWhat does electric current measure?(1 point) 2how quickly electrical energy moves in a circuithow frequently electrical energy moves in a circuithow much electrical energy moves in a circuithow well electrical energy moves in a circuitHow is a magnetic field produced?(1 point) 3when an object has an electric chargewhen electrons move through a circuitwhen a current runs through a conductorwhen an electromagnetic field interacts with a magnetWhich statement best describes how an electromagnetic motor works?(1 point) 4Electrons are moved through a magnet, creating a circuit. That circuit interacts with a current, moving the conductor in the orientation of the field.Electrons are moved through a circuit, creating a current. That current interacts with a magnet, moving the conductor in the orientation of the field.Electrons are moved through a current, creating a circuit. That circuit interacts with a magnet, moving the conductor in the orientation of the field.Electrons are moved through a magnet, creating a current. That current interacts with a circuit, moving the conductor in the orientation of the field.Electromagnetism in Use Quick Check5 of 5ItemsItem 5Use the image to answer the question.A diagram shows a wire carrying a current in vertical direction. The magnetic field drawn using compass needles around the wire are concentric circles in a plane perpendicular to the direction of current.What are the particles demonstrating in this image?(1 point) 5electric fieldelectromagnetic fieldelectromagnetic motormagnetic field