Aparallel-plate capacitor has square plates that are 8.00cm on each side and 4.20mm apart. the space between the plates is completely filled with two square slabs of dielectric, each 8.00cm on a side and 2.10mm thick. one slab is pyrex glass and the other is polystyrene1) if the potential difference between the plates is 76.0v , how much electrical energy is stored in the capacitor? u =
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Ответ:
Explanation:
Given that
a= 8 cm (square)
A= a ² = 64 cm²
d= 4.2 mm
d₁= 2.1 mm ,K₁= 4.7
d₂=2.1 mm , K₂=2.6
We know that capacitance given as
Net capacitance
We know that stored energy given as
V= 76 V
Ответ:
Lowest frequency EM waves:
Radio and Tv waves