Analisis penyimpangan konversi energi listrik menjadi kalor pada perangkat eksperimen Hukum Joule
DOI:
https://doi.org/10.12928/jrkpf.v5i1.9210Abstract
Perubahan bentuk energi listrik menjadi kalor dikenal dengan Hukum Joule, yang menyatakan bahwa energi listrik dapat diubah menjadi energi panas. Penelitian ini bertujuan untuk mencari penyimpangan kalor yang dihasilkan dari energi listrik menggunakan perangkat eksperimen Hukum Joule. Pada penelitian ini air dipanaskan dalam kalorimeter, dengan arus, tegangan listrik dan waktu pemanasan dan pendinginan dibuat tetap. Hasil pengamatan menggunakan alat Joule meter menunjukkan adanya perbedaan yang signifikan antara energi panas pada air 100 gram dengan nilai rata-rata energi panas 2736,72 J dan air 150 gram dengan nilai rata-rata energi panas 2651,04 J. Grafik antara energi panas terhadap energi listrik menunjukkan perbedaan gradien pada suhu 23,5 oC yaitu 0,91 untuk air 100 gram dan 0,99 untuk air 150 gram, sedangkan pada suhu 25,5 oC untuk air 100 gram dan 150 gram gradiennya adalah 0,99 dan 0,64. Hasil tersebut menunjukkan penyimpangan konversi energi listrik menjadi kalor pada perangkat eksperimen hukum Joule.
The transformation of electrical energy into heat energy is known as Joule's Law, which states that electrical energy can be converted into heat energy. This study aims to find the distortion of heat generated by electrical energy using the Joule Law experiment device. In this study, water is heated in the calorimeter, with constant current, electric voltage and heating and cooling times. The result of observation using Joule meter shows significant difference between heat energy in 100 grams water with the average value of heat energy 2736.72 J and 150 grams water with the average value of heat energy 2651.04 J. The graph of heat energy towards electrical energy shows gradient difference at temperature 23.5 oC that is 0,91 for 100 grams water and 0,99 for 150 grams water, while at temperature 25.5 oC for 100 grams and 150 grams water the gradient are 0.99 and 0.64. The result of this study shows the deviation of the conversion of electrical energy into heat in the Joule law experiment device.
Kata kunci: Hukum Joule, Kalor, Energi Listrik
References
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