Advanced PlacementHigh School / Physics

Planck's Constant

Students use a voltage sensor and an AC/DC electronics laboratory to measure the turn-on voltage of various colors of LEDs and then plot the turn-on voltage versus LED frequency to determine the value of Planck’s constant.


Student Files

16_AP2_Plancks_Constant_GI.docx 106.61 KB
16_AP2_Plancks_Constant_SD.docx 105.79 KB
16_AP2_Plancks_Constant_S.docx 367.87 KB

Teacher Files

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Standards Correlations

IB Topics AP Topics
12.1 6.F.3.1; 6.F.4.1

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Wireless Voltage Sensor

Wireless Voltage Sensor

Easily record voltage data while exploring fundamental circuit concepts, electrochemical batteries, and so much more.

AC/DC Electronics Laboratory

AC/DC Electronics Laboratory

Facilitates electricity experiments for AC and DC. Can be used as a stand-alone with a multimeter or with PASCO sensors and software.

Many lab activities can be conducted with our Wireless, PASPORT, or even ScienceWorkshop sensors and equipment. For assistance with substituting compatible instruments, contact PASCO Technical Support. We're here to help.

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Source: Lab #16

Advanced Physics 2 Lab Manual

Planck's Constant