# Physics: Electrostatics MCQs

##### 6. Question

A parallel plate capacitor is partially filled with glass of dielectric constant 4.0 as shown below. The dielectric strengths of air and glass are 30 kV/cm and 300 kV/cm, respectively. The maximum  voltage (in kilovolts), which can be applied across the capacitor without any breakdown, is _________

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##### 7. Question

Two electrodes, whose cross-sectional view is shown in the figure below, are at the same potential. The maximum electric field will be at the point

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##### 8. Question

A parallel plate capacitor filled with two dielectrics is shown in the figure below. If the electric field in the region A is 4 kV/cm, the electric field in the region B, in kV/cm, is

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##### 9. Question

Two electric charges and −2 are placed at (0,0) and (6,0) on the x-y plane. The equation of the zero equipotential curve in the x-y plane is

x2+y2 =2

(x+2)2 + y2 =16

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##### 10. Question

Consider a solid sphere, of radius 5 cm made of a perfect electric conductor. If one million electrons are added to this sphere, these electrons will be distributed

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