Fill in the Blanks Unit 6: electricityOnline version electricity by Mar García 1 Cooper positive nucleus attract insulators current Static circuit Martin 1925 1800 negative television mobile Electricity conductors Thomas Edison repel 1 . is energy that flows everywhere around us , and we use it in our everyday life . 2 . Protons and neutrons stick together inside the . 3 . Electrons have a charge . 4 . Protons have a charge . 5 . Objects that have opposite charges each other . 6 . Objects that have similar electrical charges each other . 7 . An electrical happens when there is an exchange of electrons between elements . 8 . electricity is energy that does not flow . 9 . Materials such as aluminium and water are good examples of materials . 10 . Rubber and plastic are good examples of materials . 11 . An electrical current can be produced and transported in a closed electrical . 12 . Alessandro Volta invented the first electrical battery in . 13 . patented the incandescent light bulb in 1879 . 14 . John Logie Baird invented the mechanical in . 15 . made the first phone call on a prototype phone .