For making a capacitor, it is better to select a dielectric having___________?
Correct answer: B. high permittivity
- A. low permittivity
- B. high permittivity
- C. permittivity same as that of air
- D. permittivity slightly more than that of air
Explanation
Capacitance is C = εA/d, so increasing the dielectric permittivity increases the charge stored for the same voltage. A high-permittivity dielectric therefore gives a larger capacitance.
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