The voltage across an air-filled parallel-plate capacitor is measured to be V₁ =178.0 V. When a dielectric is inserted and completely fills the space between the plates, as in the figure below, the voltage drops to V₂ = 52.4 V. Dielectric Co AV AV (a) What is the dielectric constant of the inserted material? Can you identify the dielectric? bakelite O nylon Opaper Oneoprene rubber O teflon (b) If the dielectric doesn't completely fill the space between the plates, what could you conclude about the voltage across the plates?

University Physics Volume 2
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Chapter8: Capacitance
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Problem 84CP: A capacitor has parallel plates of area 12 cm2 separated by 2.0 mm. The space between the plates is...
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The voltage across an air-filled parallel-plate capacitor is measured to be V₁ =178.0 V. When a dielectric is inserted and
completely fills the space between the plates, as in the figure below, the voltage drops to V₂ =52.4 V.
Dielectric
C
AV
AV
b
(a) What is the dielectric constant of the inserted material?
Can you identify the dielectric?
bakelite
O nylon
Opaper
neoprene rubber
teflon
(b) If the dielectric doesn't completely fill the space between the plates, what could you conclude about the voltage across
the plates?
Transcribed Image Text:The voltage across an air-filled parallel-plate capacitor is measured to be V₁ =178.0 V. When a dielectric is inserted and completely fills the space between the plates, as in the figure below, the voltage drops to V₂ =52.4 V. Dielectric C AV AV b (a) What is the dielectric constant of the inserted material? Can you identify the dielectric? bakelite O nylon Opaper neoprene rubber teflon (b) If the dielectric doesn't completely fill the space between the plates, what could you conclude about the voltage across the plates?
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