Crossword Puzzle Powering Up: An Electricity CrosswordOnline version Test your knowledge on the fascinating world of electrical energy and its components. by Mary Highfield 1 The electric potential difference between two points in a circuit. 2 A closed path through which electric current flows. 3 The flow of electric charge in a conductor. 4 The opposition to the flow of electric current. 5 A device that stores electrical energy in an electric field. 6 A device that changes the voltage of alternating current. 7 A machine that converts mechanical energy into electrical energy. 8 A material that allows the flow of electric current with minimal resistance. 5 1 2 3 4 8 7