Electric Force and Electric Charge Prelab Assignment

Name:_______________________ Lab Section:_____ Code Number:______

Read Halliday, Resnick & Walker Fundamentals of Physics, Chapter 21.

  1. Write Coulomb's Law in equation form and explain what the equation means. Do not simply translate the symbols from math into English, but rather explain the content of the law.
  2. A piece of material is electrically neutral. What is its total electric charge? Can there be positive or negative charge inside this material?
  3. Explain in your own words the meaning of the superposition principle.
  4. A charge of 25 mC is uniformly distributed throughout a 15 cm x 3.0 cm x 2.0 cm rubber block. What is the volume charge density in the block?
  5. What is the linear charge density along the first (x) dimension?

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