Charging by Conduction and Grounding Read from Lesson 2 of the Static Electricity chapter at The Physics Classroom: http://www usizd.html physicselassroom.com/C html MOP Connection: Static Electricity: sublevel in the following blanks with the words electrons or protons are negatively charged and atoms and are are positively charged. The reside in the nucleus of lightly bound; they will never leave an atom as a result of electrostati procedures On the other hand, As an object begins to gain or lose are located outside the nucleus and are easily removed from or added to atoms from its atoms, it becomes positively or negatively charged. A negatively charged object has more than A positively charged object has more than Review: 2. A metal sphere is resting upon an insulating stand. A teacher holds a metal bar (with an insulating handle). The teacher uses the metal bar to charge the metal sphere by conduction. Which one of the processes describes what the teacher likely did to charge the sphere by conduction? a. The teacher rubbed the bar and the sphere together. b. The teacher held the bar near the sphere and then touched the sphere with her hand. C. The teacher charged the bar and then contacted it to the sphere. Consider the conduction charging process described below: A: A teacher holds a negatively charged metal barby its insulating handle and touches it to a metal sphere (attached to an insulating stand). B: The teacher pulls the metal bar away and the metal sphere acquires a charge. C: The excess negative charge spreads uniformly about the surface of the metal sphere. 3.Diagram A is the charging step. How does the sphere become charged? a. Electrons move from the insulating stand into the sphere. b. Electrons move from the charged metal bar into the sphere C. Protons move from the sphere into the negatively charged bar. 4.When the metal bar is pulled away in Diagram B, the metal bar is a. positively charged b. electrically neutral C. still negatively charged but has fewer excess electrons than it previously did. 5.Diagram C shows the excess negative charge distributed differently than it is in Diagram B. Explain why the excess negative charge would distribute itself as it does in Diagram C.

Question

Charging by Conduction and Grounding Read from Lesson 2 of the Static Electricity chapter at The Physics Classroom: http://www usizd.html physicselassroom.com/C html MOP Connection: Static Electricity: sublevel in the following blanks with the words electrons or protons are negatively charged and atoms and are are positively charged. The reside in the nucleus of lightly bound; they will never leave an atom as a result of electrostati procedures On the other hand, As an object begins to gain or lose are located outside the nucleus and are easily removed from or added to atoms from its atoms, it becomes positively or negatively charged. A negatively charged object has more than A positively charged object has more than Review: 2. A metal sphere is resting upon an insulating stand. A teacher holds a metal bar (with an insulating handle). The teacher uses the metal bar to charge the metal sphere by conduction. Which one of the processes describes what the teacher likely did to charge the sphere by conduction? a. The teacher rubbed the bar and the sphere together. b. The teacher held the bar near the sphere and then touched the sphere with her hand. C. The teacher charged the bar and then contacted it to the sphere. Consider the conduction charging process described below: A: A teacher holds a negatively charged metal barby its insulating handle and touches it to a metal sphere (attached to an insulating stand). B: The teacher pulls the metal bar away and the metal sphere acquires a charge. C: The excess negative charge spreads uniformly about the surface of the metal sphere. 3.Diagram A is the charging step. How does the sphere become charged? a. Electrons move from the insulating stand into the sphere. b. Electrons move from the charged metal bar into the sphere C. Protons move from the sphere into the negatively charged bar. 4.When the metal bar is pulled away in Diagram B, the metal bar is a. positively charged b. electrically neutral C. still negatively charged but has fewer excess electrons than it previously did. 5.Diagram C shows the excess negative charge distributed differently than it is in Diagram B. Explain why the excess negative charge would distribute itself as it does in Diagram C.

Answer 1

1. "Electrons", "protons", "protons", "electrons", "electrons", "electrons", "protons", "electrons", "protons", "protons", "protons"2. c3. b4. c5. The dispersion of excess negative charge can be explained by the fact that all negative charges show strong repulsion against each other. Therefore they distribute unevenly over the spherical surface and manage to maintain maximum distances from each other. They prefer peripheries due to more available area, least mutual interaction (repulsion) and minimal capacity to mutually affect each other's equilibrium.

Answer 2

In this question, you are asked questions on static electricity and charge conduction.1. The question expects your understanding of atomic structure and the nature of charge. Electrons are negatively charged particles that reside in shells around the nucleus. The nucleus itself houses protons alongwith neutrons. Protons are positively charged. During electrostatic processes, electrons because they are loosely held, are able to move from atom to atom.2. The process of providing charge via conduction is about physically making contact with the charged body. In this case, the likely option should be where the teacher physically providesthe charge to the condition via the metal rod.3. To understand how the sphere gets charged, one must comprehend that same charges repel each other. Considering that bar is negatively charged, the electrons on it should get transferred to the neutral sphere the moment they come into contact.4. In diagram B, when the already contacted rod and spere are separated, the sphere has acquired some electrons from the rod. Thus, the rod also while maintaining its negative charge will have less excess electrons than before.5. In final diagram C, the excess negative charge distributes uniformly because like charges repel and thus, they tend to spread and maintain maximum distances from each other.

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