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Electric charge

Instructions: answer the questions, check them carefully, and when you are sure they are all right, press submit. The number of correct answers will be displayed.

Question 1: Which of these groups are all conductors?





Question 2: Two perspex rods are rubbed vigorously with wool. When they are brought close together, they will:




Question 3: The spark from a finger to a charged ball is an example of:




Question 4: Which of these is a good conductor?







Question 5: Why did Pieter van Musschenbroek receive a bad shock when he charged his Leyden jar while holding it?




Question 6: What was Benjamin Franklin's experiment with electricity?




Question 7: Why can you charge a non-conductor by rubbing with material, such as wool, but not a metal?




Question 8: What is the term for the charging of an object without contact?







Question 9: What is the unit for electrical charge?




Question 10: A perspex rod is charged positively. It is brought close to a metallic ball on an insulated stand, but does not touch. The experimenter touches the ball on the opposite side with her finger. What is the net charge on the ball afterwards?




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