Final answer:
Jupiter's strong magnetic field is generated by its metallic hydrogen layer, where the high pressure turns hydrogen into a conducting liquid metal.
Step-by-step explanation:
Jupiter's strong magnetic field is generated in its metallic hydrogen layer. This layer is found deep within Jupiter, a few thousand kilometers below the visible clouds, where the pressure is so great that hydrogen takes on the properties of a metal. In this state, the hydrogen acts like a liquid metal, conducting electricity and generating the planet's magnetic field through electric currents produced by the rapidly spinning interior.
While Jupiter also contains a rocky core and layers of liquid and gaseous hydrogen, it is the liquid metallic hydrogen that is responsible for its intense magnetic field. This field contributes to Jupiter's large magnetosphere, which is the region around the planet where its magnetic field is the dominant force over the interplanetary magnetic field.