Physics · Electrostatics
A parallel plate capacitor of capacitance 2 μF is charged to 50 V and then disconnected from the source. Later, the gap between the plates of the capacitor is filled completely with a dielectric material. If the energy stored in the capacitor decreases by 25% of its initial value, then the dielectric constant of the material is:
- 132
- 234
- 343✓
- 423
Correct answer
43
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