Bring them near a neutral object, and remain behind on the Electroscope for a see if they attract the new object by net negative charge. inducing an opposite charge in it. The magnitude of the charge on each The bits of paper will be attracted since object is the same, and it is of the negatively charged rod will locally opposite sign. polarize the paper, pushing its electrons further from the surface, leaving behind They repel each other. a positive charge which is attracted to the rod. They attract each other. Electrons are moving between the They repel each other. sweater and the shirt due to friction. This is evidenced by sparks. Benjamin Franklin. The metal ball is insulated from ground, so the positively charged rod attracts Proton. Electron. electrons from the far side of the sphere to the near side, and then the ball is Negative. Ion. attracted to the rod. Empty space. Negative. The rod repels more negative charges from the top of the Electroscope to the leaves, forcing them apart further. No. The smallest free charge has a magnitude of “e.” Put a positive rod near each paper slip, without touching. If one repels, then it has a positive charge. If both are attracted, then the test is inconclusive. Positive. Ion. Take a negative rod and then the paper that is repelled has a negative charge. The neutral paper is attracted to both The glass loses electrons. Protons negative and positive rods. are too massive too move, they are physically deep within the nucleus. Only electrons move. This is charging by induction. Negative. Conduction via a positively charged rod, or Induction via a negatively charged rod and a ground. Yes. Electric force does not require a Place the charged rod near the top of a physical medium. grounded electroscope. Remove the ground with the rod still there. Electrons will move up the ground wire from the Decreases by a factor of four. Earth to the Electroscope. When the ground wire is removed, the electrons
Bring them near a neutral object, and see if they attract the new object by inducing an opposite charge in it. The magnitude of the charge on each object is the same, and it is of opposite sign. They repel each other. They attract each other. They repel each other. Benjamin Franklin. Proton. Electron. Negative. Ion. Empty space. No. The smallest free charge has a magnitude of “e.” Positive. Ion. The glass loses electrons. Protons are too massive too move, they are physically deep within the nucleus. Only electrons move. Conduction via a positively charged rod, or Induction via a negatively charged rod and a ground. Place the charged rod near the top of a grounded electroscope. Remove the ground with the rod still there. Electrons will move up the ground wire from the Earth to the Electroscope. When the ground wire is removed, the electrons remain behind on the Electroscope for a net negative charge. The bits of paper will be attracted since the negatively charged rod will locally polarize the paper, pushing its electrons further from the surface, leaving behind a positive charge which is attracted to the rod. Electrons are moving between the sweater and the shirt due to friction. This is evidenced by sparks. The metal ball is insulated from ground, so the positively charged rod attracts electrons from the far side of the sphere to the near side, and then the ball is attracted to the rod. Negative. The rod repels more negative charges from the top of the Electroscope to the leaves, forcing them apart further. Put a positive rod near each paper slip, without touching. If one repels, then it has a positive charge. If both are attracted, then the test is inconclusive. Take a negative rod and then the paper that is repelled has a negative charge. The neutral paper is attracted to both negative and positive rods. This is charging by induction. Negative. Yes. Electric force does not require a physical medium. Decreases by a factor of four.