Open AccessPermittivity Measurement Using the Resonance Circuits
Author(s) -
Ignatius Edi Santosa
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2019/1/012073
Subject(s) - capacitor , inductor , electronic circuit , variable capacitor , capacitance , rlc circuit , electrical engineering , resonance (particle physics) , inductance , permittivity , neon , lc circuit , materials science , oscillation (cell signaling) , optoelectronics , physics , voltage , dielectric , engineering , chemistry , atomic physics , argon , electrode , quantum mechanics , biochemistry
A pair of LC circuits has been used to demonstrate the resonance condition of electromagnetic waves. The first circuit comprises of an inductor, a capacitor and a power supply; while the second pair employs an inductor, a variable capacitor and a neon bulb. The same inductance is applied in both circuits. The variable capacitor is a parallel plate capacitor. By varying the capacitance in the second circuit, we achieve the resonance condition as indicated by the lit neon bulb. By doing so, we observe the equal oscillation frequency in both, the first and second circuit. The condition is then used to obtain the permittivity of air to be (6.1±0.2) x10-11 F/m.