The Ohm's Law Concept Builder is a tool that allows the learner to predict the effect of varying voltage and varying resistance upon the current in a circuit. There are 12 different situations to analyze and three ability levels. Each situation requires that the learner use proportional reasoning and the I = ∆V/R equation in order to determine the current that results when the voltage and/or the resistance of a circuit is altered. Question-specific help is provided for each of the 12 situations. The built-in score-keeping makes this Concept Builder a perfect candidate for a classroom activity.
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