# Which of the following determines the capacitance of a capacitor ?

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Which of the following determines the capacitance of a capacitor ?
1. Plate area, temperature, and plate separation
2. Voltage rating, dielectric constant, and temperature coefficient
3. Temperature coefficient, plate area, and plate separation
4. Plate area, dielectric constant, and plate separation

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Correct Answer - Option 4 : Plate area, dielectric constant, and plate separation

The capacitance of a parallel plate Capacitor is:

${\rm{C}} = \frac{{\epsilon{\rm{A}}}}{{\rm{d}}}$

${\rm{C\;\alpha \;}}\epsilon{\rm{\;\alpha \;A\;\alpha }}\frac{1}{{\rm{d}}}$

Thus, the capacitance of a parallel plate capacitor increases with an increase in the overlapping area of plates.

The capacitance of a parallel plate capacitor increases with an increase in the relative permittivity of the dielectric.

The capacitance of a parallel plate capacitor increases with decreases in distance between the plates.