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Chapter-18 Electric Forces and Electric Fields

Chapter-18 Electric Forces and Electric Fields. Electric Forces and Electric Fields. Atomic Particle. Charge. Mass. Electron. –1.6  10 -19 C. 9.11  10 -31 Kg. Proton. +1.6  10 -19 C. 1.673  10 -27 Kg. Neutron. 0. 1.675  10 -27 Kg. Atom.

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Chapter-18 Electric Forces and Electric Fields

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  1. Chapter-18Electric Forces and Electric Fields

  2. Electric Forces and Electric Fields

  3. Atomic Particle Charge Mass Electron –1.6  10-19 C 9.11  10-31 Kg Proton +1.6  10-19 C 1.673  10-27 Kg Neutron 0 1.675  10-27 Kg Atom

  4. Charging Ebonite Rod & Fur

  5. Charging an Object Ebonite rod & Fur  Negatively charged ebonite rod Glass rod & Silk  Positively charged glass rod

  6. LAW OF CONSERVATION OF ELECTRIC CHARGE During any process, the net electriccharge of an isolated system remains constant (is conserved).

  7. Like charges repel and unlike charges attract each other.

  8. How Electronic Ink Will Work http://www.howstuffworks.com/e-ink.html

  9. 18.3. Conductors and Insulators Substances that readily conduct electriccharge are called electrical conductors. Conductors have free electrons, which conduct the electricity. Examples: Metals such as copper, aluminum, silver, and gold. Materials that conduct electric charge poorly are known as electrical insulators. Examples: Rubber, plastics, and wood.

  10. 18.4 Charging by Contact and by Induction An object can be charged by two methods: -By contact. -By induction.

  11. Charging By Contact

  12. Charging By Induction

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