These belts are formed like two nested doughnuts. Their dimensions alter according to photo voltaic action and, sometimes, on how we model them. Electricity in the Solar is established from the Main and travels outward in the Solar and to the heliosphere. These convection cells are just like boiling water, https://radiationzonemeaning30482.ourabilitywiki.com/9921920/everything_about_radiation_zone_of_the_sun