Using a digital voltmeter and a smartphone camera to investigate the RC circuit

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Unofre Pili, Renante Violanda, Joel Pili

2019 Physics Education Vol. 54 Issue 3 Article Cited by 3 Quartile

Abstract

This paper presents a simple and accessible method to investigate the charging and discharging behaviour of a capacitor in a resistor-capacitor (RC) circuit. The technique simply requires a digital voltmeter, a stopwatch and a camera. A video using a high-speed smartphone camera captures simultaneously the readings of both the voltmeter and the stopwatch in order to record the temporal behaviour of the voltage across the capacitor. A good agreement between experimental results and theoretical models is observed. © 2019 IOP Publishing Ltd.

Affiliations

University of San Carlos, Cebu City, 6000, Philippines; Cebu Technological University-Pinamungahan Campus, Cebu, Philippines