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GUJCET · Physics · Electrostatic Potential and Capacitance
A parallel plate capacitor with air between the plates has a capacitance of 1.0 pF. If the distance between the plates is made doubled and space between them is filled with dielectric substance, the capacitance becomes 2.0 pF. Then the value of dielectric constant of dielectric substance is ___________.
- A 1.5
- B 3.0
- C 2.0
- D 4.0
Answer & Solution
Correct Answer
(D) 4.0
Step-by-step Solution
Detailed explanation
\(C_0 = \frac{\epsilon_0 A}{d} = 1.0 \text{ pF}\) \(C = \frac{k \epsilon_0 A}{2d} = 2.0 \text{ pF}\)
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