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Internal resistance

  1. Apr 17, 2005 #1
    What causes internal resistance in the following:

    A) A Cell,

    B) A Solar Cell?

    Is it not just the same thing? Thanks in advance. :smile:
  2. jcsd
  3. Apr 18, 2005 #2

    Andrew Mason

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    Science Advisor
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    I think the difference is that a dry cell battery, being made up of conducting material, whereas a solar cell is a semiconductor. There are free electrons in a conductor. The conductivity of the semiconductor depends on the quantum mechanical behaviour of electrons at the junction of two different semiconductor materials.

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