Explain the effect of a dielectric on the capacitance of an isolated charged parallel-plate capacitor. Hence, show that if a dielectric of relative permittivity (dielectric constant) 'k' completely fills the space between the plates, the capacitance increases by a factor 'k.
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Answer:
The strength of the electric field is reduced due to the presence of dielectric. If the total charge on the plates is kept constant, then the potential difference is reduced across the capacitor plates. In this way, dielectric increases the capacitance of the capacitor.
Answer:
The strength of the electric field is reduced due to the presence of dielectric. If the total charge on the plates is kept constant, then the potential difference is reduced across the capacitor plates. In this way, dielectric increases the capacitance of the capacitor.