Final answer:
The magnetic fields of the planets are generated by electric currents in their spinning interiors, creating a magnetosphere around the planet.
Step-by-step explanation:
The magnetic fields of the planets are produced by electric currents in their spinning interiors. These currents create the planet's own magnetic field, which dominates over the interplanetary magnetic field in the region around the planet, known as the magnetosphere.For example, Jupiter has a vast number of charged atomic particles circulating around it, spiraling around the lines of force of its magnetic field. This is similar to the Van Allen belt around Earth.The magnetic fields of the planets are generated by the movement of charged particles, which produce a magnetic field when they are moving together on the scale of an entire planet.