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A parallel plate capacitor is made of two circular plates separated by a distance 5 mm and with a dielectric of dielectric constant 2.2 between them. When the electric field in the dielectric is 3 × 104 Vm the charge density of the positive plate will be close to:
  • a)
    6 ×10-7 Cm2
  • b)
    3 × 10-7 Cm2
  • c)
    3 × 104 Cm2
  • d)
    6 ×104 Cm2
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
A parallel plate capacitor is made of two circular plates separated by...
Electric field in presence of dielectric between the two plates of a parallel plate capacitor is given by,
Then, charge density
σ = Kε0E    
= 2.2 × 8.85 × 10–12 × 3 × 104 ≈ 6 × 10–7 C/m2
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A parallel plate capacitor is made of two circular plates separated by a distance 5 mm and with a dielectric of dielectric constant 2.2 between them. When the electric field in the dielectric is 3 × 104 Vm the charge density of the positive plate will be close to:a)6 ×10-7 Cm2b)3 × 10-7 Cm2c)3 × 104 Cm2d)6 ×104 Cm2Correct answer is option 'A'. Can you explain this answer?
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