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Science Teacher Training in an Information Society
Start Teaching with computer models

 USIE

Workshop 1

Introduction
Section A
Section B
Activity B1
Activity B2
Activity B3
Activity B4
Activity B5
Section C
Section D
Section E
Section F
Section G

StartContents

Section B  Learning about the innovation

Activity B3  Beyond linear relationships (cont.)
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Electricity

Model 3b.1

This model calculates the power output (watts) in a circuit from the values of V (volts) and R (ohms). It does this by first working out the current from the formula: 

       I = V / R

and then working out the power from the formula: 

       P = V I

Another way of working out the power would be directly from the formula: 

       P = V2 R

The cells are duplicated so that different values for the variables can be entered and the results compared. 


 
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