This research proposes the development of a web-based assessment system to identify students' misconception. The system, named WAS (web-based assessment system), can identify students' misconception profile on linear kinematics automatically after the student has finished the test. The test instrument was developed and validated. Items were constructed and arranged from the result of a focus group discussion (FGD), related to previous research. Fifty eight students (female = 37, male = 21) were used as samples. They were from different classes with 18 students from the gifted class and another 40 students from the normal class. WAS was designed specifically to support the teacher as an efficient replacement for a paper-based test system. In addition, WAS offers flexible timing functionally, stand-alone subject module, robustness and scalability. The entire WAS program and interface was developed with open source-based technologies such as the XAMP server, MySQL database, Javascript and PHP. It provides results immediately and provides diagrammatic questions as well as scientific symbols. It is feasible to apply this system to many students at once. Thus, it could be integrated in many schools as part of physics courses.

Along with the progress of development, the use of lamps as a source of lighting is also increasing. The use of more and more lights also has an impact on the amount of electronic waste that is difficult to process. Therefore, it is necessary to take action to process the waste from the lamp so as not to disturb the cleanliness of the environment. One way is to reprocess the components of the lamp in the form of a resistor. Resistors are electronic components that have two pins and are designed to regulate electrical voltage and electric current. These resistors are mini, but contain a variety of colors that can be a special attraction if arranged in such a way. One technique for managing resistor waste accessories is to process them into, among others, brooches and bracelets. Bros is an object that becomes a decoration for women's clothing. Brooches worn on the hijab or attached to clothes to make it look more graceful and elegant. Although made of resistors, this brooch is also equipped with additional knitted fabric to enhance the appearance. This knitted fabric is knitted to form flowers and ribbons with a resistor placed in the middle. Then based on this writing, some conclusions are obtained that these resistor accessories are accessories made of resistors with the help of knitting formed into flowers. These accessories work to decorate clothes, to reduce waste from lamps in particular, and can be more useful and have a high selling value. With the "(Actor) Accessories Resistor" it is hoped that the surrounding community can be more creative with the garbage that has accumulated around them. So that the environment is protected from the danger of garbage.

Artikel penelitian ini menjelaskan pembuatan alat percobaan Induksi Magnetik pada Kawat Melingkar Berarus untuk menunjukkan hubungan hubungan antara jari-jari lingkaran, banyak lilitan, dan arus listrik dengan menggunakan sensor efek hall <em>UGN3503</em> dan sensor arus ACS712. Alat ini dapat menghitung besar induksi magnetik dan arus secara otomatis. Alat percobaan induksi magnetik yang dilengkapi sensor ini merupakan modifikasi dari alat percobaan yang menjelaskan desain praktikum pembelajaran sub materi induksi magnetik di kawat melingkar berarus yang konvensional. Alat ini tersusun dari tiga bagian utama, yaitu papan utama percobaan, rangkaian sumber arus listrik dan rangkaian sensor efek hall dan sensor arus. Papan utama percobaan terdiri atas papan kayu sepanjang 1 m dan lebar 40 cm, lilitan kawat dengan 5 variasi ukuran dan jumlah lilitan, serta saklar komutator. Rangkaian sumber arus terdiri dari power supply dan adaptor, serta pada rangkaian sensor terdiri atas sensor efek hall UGN3503 dan sensor arus ACS712 diletakkan di pada pusat lilitan. Hasil pembacaan sensor ditampilkan melalui LCD. Jumlah lilitan dan diameter yang bervariasi membuktikan pengaruh banyaknya jumlah lilitan dengan gaya magnet pada pusat kawat melingkar berarus. Prinsip kerja alat sesuai dengan hukum biot-savart, sehingga dapat digunakan untuk membelajarkan konsep persamaan biot savart yang digunakan sebagai dasar percobaan praktikum induksi magnetik. Berdasarkan hasil percobaan alat percobaan induksi magnetik ini sudah mampu mendeteksi dan menghitung besar induksi magnetik menggunakan sensor efek hall dan arusnya sudah terukur menggunakan sensor arus. Kekurangan pada alat ini, sensor harus diletakkan tepat berada di tengah lingkaran kawat, agar memberikan hasil yang presisi.