parallel plate capacitor in air is constructed with two 45 cm x 45 cm square conductors separated by 4 mm. a) Determine the value of the capacitance of this parallel plate capacitor. b) This capacitor is placed across a 21 V battery and allowed to fully charge. What is the value of this charge?
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A parallel plate capacitor in air is constructed with two 45 cm x 45 cm square conductors separated by 4 mm.
a) Determine the value of the capacitance of this parallel plate capacitor.
b) This capacitor is placed across a 21 V battery and allowed to fully charge. What is the value of this charge?
c) When fully charged, what is the energy stored in this capacitor?
d) With the battery still connected, a Pyrex glass dielectric material with dielectric constant κ= 4.1 is inserted between the plates, completely filling up the space. What is the new charge stored in the capacitor?
e) Now when fully charged, what is the energy stored in this capacitor (still connected to the battery and with the Pyrex glass inserted)? Answer in units of nJ
Given
Distance between plates d = 4 mm
= 4 × 10-3 m
Area of plates A = 45 cm × 45 cm
=0.45 m × 0.45 m
=0.2025 m2
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