4 4.1 5 5.1 5.2 5.3 6 6.1 6.2 6.3 end volt O Say what energy conversion takes place in each device: 4.2 4.3 SCODE Consider the following presentation: What effect of electric current is depicted here? Give the name and surname of the Danish scientist who was actually demonstrating the heat effect of electric current and incidentally observed the above effect. Name three useful uses of this effect. 4.4 E The setup alongside shows four metal bolts with different number of windings on each. The windings (wires) are connected to a S power source. What is this setup known as? Which one of the four bolts will have the biggest (strongest) effect? To which main requirement must the wire, which is turned around the bolt, comply? here 244 Doc Scientia - Textbook and Workbook - Natural Sciences - Grade 8