Question

What is meant when you say that two objects have like charges How do we tell that objects "like charges" How do we make objects with like charges Two objects are observed attract What do we know and what do we NOT know about them Your are given a piece of material. Propose an experiment or a series of experiments to determine if the material is a conductor or an insulator. State clearly what the outcome of each experiment will be if the material is a conductor and if it is an insulator. The diagram shows and object called an electroscope. It is made out of a conductor, and the leaf at the bottom right is free to hang at any angle. It is negatively charged at the moments. How will the leaf hang if negatively charged rod is brought near the sphere on the top, but not allowed to touch it Include a diagram showing the charge on the object in your answer. A positively charged glass rod touches a neutral piece of metal. What is the final charge state of the metal Use diagrams and words to explain how this charge state is achieved. Two touching metal sphere are initially neutral. A positively charged rod is brought near the left sphere (sphere A). While the rod is near, is A positively charged, neutral, or negatively charged What about B Explain.

Answer 1

Answer 7) there are two types of electrically charged objects - those that contain more protons than electrons and are said to be positively charged and those that contain less protons than electrons and are said to be negatively charged. These two types of electrical charges - positive and negative - are said to be opposite types of charge. And consistent with our fundamental principle of charge interaction, a positively charged object will attract a negatively charged object. Oppositely charged objects will exert an attractive influence upon each other. In contrast to the attractive force between two objects with opposite charges, two objects that are of like charge will repel each other. That is, a positively charged object will exert a repulsive force upon a second positively charged object. This repulsive force will push the two objects apart. Similarly, a negatively charged object will exert a repulsive force upon a second negatively charged object. Objects with like charge repel each other. So like charges are combination of (Positive + Positive) or (Negative + Negative)

Answer 8) as the objects attracts each other, that means one is Postively charged and one is negatively charged. But we dont know what is the magnitude and which one is charged +ve and which one is -ve.

Answer 9)  Place the material in series, in an electric circuit, connected to a light bulb etc. If it is a conductor, the light bulb will light up. If it is an insulator, the conducting path will be broken and the light will remain off.

Answer 11) when the positively charged glass rod is touched to the neutral metal, countless electrons on the metal migrate towards the glass rod. There is a mass migration of electrons until the positive charge on the glass rod -metal system becomes redistributed. Having lost electrons to the positively charged glass rod, there is a shortage of electrons on the rod and an overall positive charge. The glass rod is still charged positively; only it now has less excess positive charge than it had before the charging process began. Now The neutral metal is negatively charged due to conduction

Answer 12) 1st sphere A will be negatively charged and 2nd sphere B will be positively charged because of the charge separation process