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phetsims / circuit-construction-kit-dc

"Circuit Construction Kit: DC" is an educational simulation in HTML5, by PhET Interactive Simulations.
GNU General Public License v3.0
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User suggestion: incandescent bulb #159

Closed oliver-phet closed 7 years ago

oliver-phet commented 7 years ago

Unless I am missing something, it appears that the light bulb has a constant resistance and hence is equivalent to a resistor.

Instead, I suggest that you hard-wire in a typical I vs V curve for an incandescent bulb in order to demonstrate a failure of Ohm's law in the form V = I R (for constant R).

Students could then do an "experiment" to deduce I(V) by changing the source voltage and measuring I.

This should be a small change. In the longer term it would be interesting to couple this to an energy budget for heat and light production.

arouinfar commented 7 years ago

@oliver-phet this suggestion overlaps a bit with #157 requesting a non-Ohmic bulb, which will be included in a later version (see https://github.com/phetsims/circuit-construction-kit-common/issues/10).

Despite what the user suggests, this is not a small change. It'll require quite a bit of work, which is why it's being deferred to version 1.1 (or later).

oliver-phet commented 7 years ago

Thanks, will let user know this is a planned feature.