If it is negatively charged than taking its electrons or if it is positively charged than make it gain electrons. Universe has excess amount of electrical charges, electrons and protons. This huge resource makes all charged particles neutral we call this process as grounding. Look at the given example that shows grounding process of positively charged matters and negatively charged matters.
First sphere is negatively charged. At that point both spheres will have 5 units per 6 cm 2. Now imagine the same sphere the one with 6 units of charge originally in contact with the earth.
What will happen to the charge? The earth's area is 4. Even after losing 5 units of charge, it will still represent a higher charge density than the earth. As a result, the last unit of charge will also leak into the earth. Figure 5 shows how the polarization of atoms and molecules in neutral objects results in their attraction to a charged object. Figure 5. Both positive and negative objects attract a neutral object by polarizing its molecules.
There is a slight shift in the distribution of the electrons orbiting the molecule, with unlike charges being brought nearer and like charges moved away. Since the electrostatic force decreases with distance, there is a net attraction. When a charged rod is brought near a neutral substance, an insulator in this case, the distribution of charge in atoms and molecules is shifted slightly.
Opposite charge is attracted nearer the external charged rod, while like charge is repelled. Since the electrostatic force decreases with distance, the repulsion of like charges is weaker than the attraction of unlike charges, and so there is a net attraction.
Thus a positively charged glass rod attracts neutral pieces of paper, as will a negatively charged rubber rod. Some molecules, like water, are polar molecules.
Polar molecules have a natural or inherent separation of charge, although they are neutral overall. Polar molecules are particularly affected by other charged objects and show greater polarization effects than molecules with naturally uniform charge distributions. Water molecules are polarized, giving them slightly positive and slightly negative sides. As the water flows downward, due to the force of gravity, the charged conductor exerts a net attraction to the opposite charges in the stream of water, pulling it closer.
Make sparks fly with John Travoltage. Bring his hand close to the door knob and get rid of the excess charge. Skip to main content. Electric Charge and Electric Field. Search for:. Conductors and Insulators Learning Objectives By the end of this section, you will be able to: Define conductor and insulator, explain the difference, and give examples of each. Describe three methods for charging an object. Explain what happens to an electric force as you move farther from the source.
Define polarization. Check Your Understanding Can you explain the attraction of water to the charged rod in Figure 6? Grounding It will also absorb enough e- to make a -ve object neutral.
Creating a Static Charge Coming up: Induction. Total views 2, On Slideshare 0. From embeds 0. Number of embeds 2. Downloads 0. Shares 0. Comments 0. Likes 0. You just clipped your first slide!
Clipping is a handy way to collect important slides you want to go back to later. Now customize the name of a clipboard to store your clips. Visibility Others can see my Clipboard. Cancel Save. Exclusive 60 day trial to the world's largest digital library.
0コメント