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A parallel plate capacitor is formed by two plates each of area 30 π cm 2 separated by 1 mm. A material of dielectric strength 3.6 × 10 7 Vm –1 is filled between the plates. If the maximum charge that can be stored on the capacitor without causing any dielectric breakdown is 7 × 10 –6 C, the value of dielectric constant of the material is : [Use 0 4 1 πε = 9 × 10 9 Nm 2 C –2 ]

1. 1.66
2. 1.75
3. 2.25
4. 2.33

Correct answer: 2.33

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