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MHT CET202615 April 2026Morning ShiftPhysicsCapacitanceActual

The function of a dielectric in a capacitor is to

Options

  1. Areduce the plate area of the capacitor.
  2. Bto decrease the capacitance.
  3. Creduce the effective potential on plates.
  4. Dincrease the effective potential on plates.

Correct answer

C. reduce the effective potential on plates.

Step-by-step solution

When a dielectric material is introduced between the plates of a capacitor, it gets polarized due to the external electric field. This polarization creates an induced electric field inside the dielectric which opposes the external electric field. As a result, the net electric field between the plates decreases. Since the potential difference is given by V = E d , the effective potential difference between the plates also decreases for a given charge. This reduction in potential difference leads to an increase in th

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