Seeing Is Believing: Demonstrating the RC Time Constant Visually

Syed, Muhammad Q.; Lovatt, Ian

doi:10.1119/10.0001837

The Physics Teacher

2020

DOI: 10.1119/10.0001837

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Seeing Is Believing: Demonstrating the RC Time Constant Visually

Muhammad Q. Syed

Ian Lovatt

Abstract: RC circuits are ubiquitous. They are the most common entities in modern electronics; introductory physics courses typically include a chapter and a lab on RC circuits. Several papers dealing with many aspects of RC circuits have been published in The Physics Teacher and other educational journals. An RC circuit contains a series combination of a resistor and a capacitor (with resistance and capacitance R and C, respectively). In this circuit the capacitor stores electric charge, and the resistor controls the r… Show more

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Cited by 3 publications

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Development of an educational device, based on Arduino, to facilitate the understanding of light diffraction

Hachmi¹,

Hadi²,

Essaadaoui³

et al. 2022

Phys. Educ.

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The Arduino board and its communication with several sensors are becoming more and more popular in the physical science community. They offer inspiring possibilities for learning different physical concepts. In this article, we focused on creating a very practical educational system for experimenting with diffraction of laser light and graphically visualizing the distribution of light intensity in space, which is impossible to perform it with the devices available in the educational laboratories of physics. The main elements of this configuration are the Arduino UNO microcontroller board, the BH1750 sensor and the NEMA17 motor and its A4990 driver. The results’ graph is displayed in real time on the computer using the Data Streamer add-in. We see that the abbreviated curve corresponds well to the theory. In addition, feedback from the participants in the test activity of the device showed that they were satisfied with its operation and its contribution to the understanding of diffraction. Therefore, we believe that the device presented can play a very important role in the diffraction phenomenon learning because of its high precision and reliability in the measurements.

show abstract

Development of an educational device, based on Arduino, to facilitate the understanding of light diffraction

Hachmi¹,

Hadi²,

Essaadaoui³

et al. 2022

Phys. Educ.

View full text Add to dashboard Cite

show abstract

Improving Euler Method using Centroidal-Polygon Scheme for Better Accuracy in Resistor-Capacitor Circuit Equation

Zulkifli

Samsudin

Yusof

2022

J. Phys.: Conf. Ser.

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A first-order ordinary differential equation (ODE) is a function with two variables defined in the xy-axis of a field. Various numerical methods, such as the Euler method, Runge-Kutta method, Heun’s method and others, are used to solve ODEs, with varying computational costs and accuracy. The Euler method can only solve the first derivative equation with the simplest implementation at the lowest cost of computation, but it produces less accurate results. This research focuses on improving the Euler method to increase its accuracy. A new scheme called Centroidal-Polygon (CP) is used in this study. The CP scheme is tested on the Resistor-Capacitor (RC) circuit equation to ensure that it can be used in fields other than mathematics and computation. The RC circuit equation is used to compute maximum error and assess the accuracy of the CP scheme and its counterparts. The circuit equation’s accuracy in the RC circuit equation is determined by the time constant (τ). This research used Scilab 6.0 software to analyze the maximum error. The performance of the CP scheme was compared to the Polygon, Harmonic-Polygon, and Cube-Polygon schemes, which are all enhanced Euler methods. The results show that the CP scheme achieves higher accuracy while requiring less computing time. In future studies, the CP scheme will be applied to the RCL circuit equation and second-order ODE to ensure the CP scheme can be used in all applications.

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Seeing Is Believing: Demonstrating the RC Time Constant Visually

Syed

Lovatt

2020

The Physics Teacher

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RC circuits are ubiquitous. They are the most common entities in modern electronics; introductory physics courses typically include a chapter and a lab on RC circuits. Several papers dealing with many aspects of RC circuits have been published in The Physics Teacher and other educational journals. An RC circuit contains a series combination of a resistor and a capacitor (with resistance and capacitance R and C, respectively). In this circuit the capacitor stores electric charge, and the resistor controls the rate of charging or discharging. The potential difference (ΔV) across a discharging capacitor is given by the following exponential function of time (t)

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Seeing Is Believing: Demonstrating the RC Time Constant Visually

Cited by 3 publications

References 14 publications

Development of an educational device, based on Arduino, to facilitate the understanding of light diffraction

Development of an educational device, based on Arduino, to facilitate the understanding of light diffraction

Improving Euler Method using Centroidal-Polygon Scheme for Better Accuracy in Resistor-Capacitor Circuit Equation

Seeing Is Believing: Demonstrating the RC Time Constant Visually

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