Objective: Increase internal energy by means of electrical work
This experiment investigates how the internal energy of copper and aluminium calorimeters can be increased by electrical work. As long as the aggregate state does not change and no chemical reactions occur, it is possible to determine the increase in internal energy from the rise in temperature to which it is proportional. In order to prevent heat being transferred from the calorimeters to their surroundings, the series of measurements should start at a temperature somewhat below the ambient temperature and finish at a temperature only slightly above that of the surroundings.
![Experiment: Internal energy and electrical work (230 V, 50/60 Hz), 8000588 [UE2030400-230], Internal Energy](/imagelibrary/UE2030400-230/UE2030400-230_01_Experiment-Internal-energy-and-electrical-work-230-V-5060-Hz.jpg)
![Experiment: Internal energy and electrical work (230 V, 50/60 Hz), 8000588 [UE2030400-230], Internal Energy](/thumblibrary/UE2030400-230/UE2030400-230_01_1200_1200_Experiment-Internal-energy-and-electrical-work-230-V-5060-Hz.jpg)
![Safety Experiment Leads, 75 cm, 2.5 mm², blue, red, (2 pcs), 1017718 [U13816], Experiment Leads and Cables](/thumblibrary/U13816/U13816_01_140_140_Safety-Experiment-Leads-75-cm-25-mm-blue-red-2-pcs.jpg)
![DC Power Supply 20 V, 5 A
(230 V, 50/60 Hz), 1003312 [U33020-230], Power Supplies](/thumblibrary/U33020-230/U33020-230_01_140_140_DC-Power-Supply-20-V-5-A-230-V-5060-Hz.jpg)
![Tripod Stand 150 mm, 1002835 [U13270], Bases](/thumblibrary/U13270/U13270_01_140_140_Tripod-Stand-150-mm.jpg)
![Photo Gate, 1000563 [U11365], Sensors for Physics](/thumblibrary/U11365/U11365_01_140_140_Photo-Gate.jpg)
![Digital Multimeter P1035, 1002781 [U11806], Hand-held Digital Measuring Instruments](/thumblibrary/U11806/U11806_01_140_140_Digital-Multimeter-P1035.jpg)
![K-Type NiCr-Ni Immersion Sensor, -65°C – 550°C, 1002804 [U11854], Thermometers](/thumblibrary/U11854/U11854_01_140_140_K-Type-NiCr-Ni-Immersion-Sensor-65-C-550-C.jpg)
![Set of 10 Beakers,600 ml, Low Form, 1002872 [U14210], Glassware](/thumblibrary/U14210/U14210_01_140_140_Set-of-10-Beakers-600-ml-Low-Form.jpg)
![Digital Counter (230 V, 50/60 Hz), 1001033 [U8533341-230], Digital Counters](/thumblibrary/U8533341-230/U8533341-230_01_140_140_Digital-Counter-230-V-5060-Hz.jpg)
![Pocket Measuring Tape, 2 m, 1002603 [U10073], Measurement of Length](/thumblibrary/U10073/U10073_01_140_140_Pocket-Measuring-Tape-2-m.jpg)
![Copper Calorimeter, 1002659 [U10366], Calorimeters](/thumblibrary/U10366/U10366_01_140_140_Copper-Calorimeter.jpg)
![Aluminium Calorimeter, 1017897 [U10367], Equivalent of Heat](/thumblibrary/U10367/U10367_01_140_140_Aluminium-Calorimeter.jpg)
![Temperature Sensor, 1017898 [U10368], Equivalent of Heat](/thumblibrary/U10368/U10368_01_140_140_Temperature-Sensor.jpg)
![Pair of Adapter Cables with 4 mm Safety Plugs/2 mm Plugs, 1017899 [U10369], Equivalent of Heat](/thumblibrary/U10369/U10369_01_140_140_Pair-of-Adapter-Cables-with-4-mm-Safety-Plugs2-mm-Plugs.jpg)
![Tubing, Silicone 6 mm, 1002622 [U10146], Hose, Flow hose](/thumblibrary/U10146/U10146_01_140_140_Tubing-Silicone-6-mm.jpg)
![Universal Clamp, 1002830 [U13255], Clamps](/thumblibrary/U13255/U13255_01_140_140_Universal-Clamp.jpg)
![Stainless Steel Rod 470 mm, 1002934 [U15002], Rods](/thumblibrary/U15002/U15002_01_140_140_Stainless-Steel-Rod-470-mm.jpg)
![Stainless Steel Rod 1000 mm, 1002936 [U15004], Rods](/thumblibrary/U15004/U15004_01_140_140_Stainless-Steel-Rod-1000-mm.jpg)
![Clamp with Hook, 1002828 [U13252], Clamps](/thumblibrary/U13252/U13252_01_140_140_Clamp-with-Hook.jpg)
![Barrel Foot, 1 kg, 1002834 [U13265], Bases](/thumblibrary/U13265/U13265_01_140_140_Barrel-Foot-1-kg.jpg)
![Heat conducting rod, copper, 1017330 [U8498291], Heat Conduction](/thumblibrary/U8498291/U8498291_01_140_140_Heat-conducting-rod-copper.jpg)