1.6 (g)
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Revision as of 09:21, 19 August 2008 by Agm (Talk | contribs) (New page: =Class Experiment= An experiment is proposed to find the emf and internal resistance of a solar cell. Different known resistors are used in series with the solar cell. The current and term...)
Class Experiment
An experiment is proposed to find the emf and internal resistance of a solar cell. Different known resistors are used in series with the solar cell. The current and terminal p.d. are measured for the range of resistors.
Resources
Analysis
A graph of p.d. against current is plotted, from which the values of emf and r are found. This leads to the equation emf = I(R+r). An extension is to find the internal resistance from plotting the external power against the load.