The dielectric strength of air is 3.0 x 106V/m. A parallel-plate air-c

1.	The dielectric strength of air is 3.0 x 106V/m. A parallel-plate air-capacitor has area 20cm2 and plate separation 0.10mm. Find the maximum rms voltage of an AC source which can be safely connected to this capacitor.
Answer» E = 3 × 10⁶V/m, A = 20cm², d = 0.1mm Potential diff. across the capacitor = Ed = 3 × 10⁶ × 0.1 × 10^–3 = 300V Max. rms Voltage = V/√2 = 300/√2 = 212V

The dielectric strength of air is 3.0 x 106V/m. A parallel-plate air-capacitor has area 20cm2 and plate separation 0.10mm. Find the maximum rms voltage of an AC source which can be safely connected to this capacitor.

Answer»

E = 3 × 10⁶V/m, A = 20cm², d = 0.1mm

Potential diff. across the capacitor = Ed = 3 × 10⁶ × 0.1 × 10^–3 = 300V

Max. rms Voltage = V/√2 = 300/√2 = 212V

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The dielectric strength of air is 3.0 x 106V/m. A parallel-plate air-capacitor has area 20cm2 and plate separation 0.10mm. Find the maximum rms voltage of an AC source which can be safely connected to this capacitor.

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