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I need help

  1. Oct 8, 2007 #1
    I can not figure out these following questions can anyone help me?



    1) Hydrogen’s electron and proton are separated by 5.3x10-13 meters. What is the electrical force between them?

    2) A charge moved .02 meters in an electric field of force 215 N/C. If the electric potential decreased by 6.9x10-19, what is the charge of the particle?

    3) If a capacitor has 3.0x10-6 F of capacitance and holds 3.6x10-5 C of charge on each plate, what is the voltage of the battery connected to it?

    4) Iron has a resistance of 19.0 Ohms. What is the current if the potential difference is 120 V?
     
  2. jcsd
  3. Oct 8, 2007 #2

    Astronuc

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    Staff: Mentor

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