Electrostatic Potential and Capacitance Problems -10

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10.

A parallel capacitor of plate area 2m² and plate separation 5 mm is charged to 10,000 V in free space. Calculate (a) capacitance (b) Charge (c) Charge density (d) Field intensity (e) Field displacement.

Suggested answer:

(a) Capacitance in vacuum

= 3.54 x 10^-9 F

(b) Charge on each plate

= 3.54 x 10^-9 x 10⁴ C

= 3.54 x 10^-5 C

(c) Charge density on each plate

= 1.77 x 10^-5 Cm^-2

(d) Field Intensity

(e) Field displacement

= 1.77 x 10^-5 Cm^-2