Students can learn from anywhere at any time, these are the goals that everyone is looking for. E-learning has given the possibility of verifying this vision by its two major aspects which are the theoretical and the practical side. Our specific focus in this work refers to the practical side, under the title of remote labs, which come with a set of challenges. In this work, we have developed a virtual tutor to guide and support students during their practical work by giving them a vocal support using a speech synthesis from Google Web Speech API. In this remote lab, the students can handle their practical work online, simply by connecting to the server via a web page. This work gives students the opportunity to create their electrical scheme using the graphical interface. We have designed this interface to bring the user closer to reality by selecting, connecting appropriate components and using measuring devices. Additionally, it enables students to seek help from the virtual tutor to check the electrical assembly and correct errors. We chose a practical work on solar cells to calculate the characteristics “i = f(v)”. In our laboratory, the student has more flexibility in manipulating his practical work, following the evolution of the manipulation and allowing him to develop his skills, our model provides the student with educational support at all times (in addition to the advantage access is 24/7, the virtual tutor is continually available to guide students). Preliminary results show that our virtual tutor feedback is limited; its interaction is fixed for all students without taking into account the individual differences of the learners.