Question:
The function of a dielectric in a capacitor is
The function of a dielectric in a capacitor is
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Dielectrics increase capacitance by reducing the effective electric field and potential difference.
Updated On: Feb 18, 2026
- to increase the effective potential on plates
- to reduce the effective potential on plates
- to decrease the capacitance
- to reduce the plate area of capacitor
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The Correct Option is B
Solution and Explanation
Step 1: Role of dielectric.
A dielectric material placed between capacitor plates becomes polarized in the electric field.
Step 2: Effect on electric field.
Polarization reduces the effective electric field between the plates.
Step 3: Effect on potential difference.
Since potential difference depends on the electric field, the effective potential across the plates decreases.
Step 4: Conclusion.
Thus, a dielectric reduces the effective potential on the plates.
A dielectric material placed between capacitor plates becomes polarized in the electric field.
Step 2: Effect on electric field.
Polarization reduces the effective electric field between the plates.
Step 3: Effect on potential difference.
Since potential difference depends on the electric field, the effective potential across the plates decreases.
Step 4: Conclusion.
Thus, a dielectric reduces the effective potential on the plates.
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