An air-filled parallel-plate capacitor has a plate area 5 cm2 and a capacitance of 3.5 pF. It is connected to a 12-v battery. After it is fully charged, the battery is removed. What is the energy density in the space between the plates?
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An air-filled parallel-plate capacitor has a plate area 5 cm2 and a capacitance of 3.5 pF. It is connected to a 12-v battery. After it is fully charged, the battery is removed. What is the energy density in the space between the plates?
A) .00019 J/m3 B) .00078 J/m3 C) .00039 J/m3
Given -
Area of plate (A) = 5 cm2 = 5x10-4 m2
capacitance = 3.5 pF = 3.5 x 10-12 F
Battery voltage (V)= 12 V
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