| 1. | It becomes possible to define potential at a point in an electric field because electric field ? | |
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obeys principle of superposition
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is a vector field
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is a conservative field
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is a non-conservative field
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Report Question| 2. | The maximum electric field that a dielectric medium can withstand without break-down is called its ? | |
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electric susceptibility
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dielectric strength
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dielectric constant
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permittivity
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| 3. | The work done in placing a charge of 8 × 10^-18 coulomb on a condenser of capacity 100 micro-farad is ? | |
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16 × 10 joule
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32 × 10 joule
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3.1 × 10 joule
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4 × 10 joule
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| 4. | Van de Graaff generator is used to ? | |
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build up high voltage of few million volts
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decelerate charged particle like electrons
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store electrical energy
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both (a) and (b)
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| 5. | From a point charge, there is a fixed point A. At A, there is an electric field of 500 V/m and potential difference of 3000 V. Distance between point charge and A will be ? | |
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16 m
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6 m
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24 m
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12 m
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| 6. | ...... is a machine that can build up high voltages of the order of a few million volts. ? | |
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Dynamo
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AC generator
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DC generator
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Van De Graaff generator
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| 7. | An equipotential surface is that surface ? | |
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which has zero potential
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which has positive potential
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on which each and every point has the same potential
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which has negative potential
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| 8. | Dielectric constant for a metal is ? | |
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10
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infinite
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zero
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1
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| 9. | The electrostatic force between the metal plates of an isolated parallel plate capacitor C having a charge Q and area A, is ? | |
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inversely proportional to the distance between the plates.
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independent of the distance between the plates.
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linearly proportional to the distance between the plates.
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proportional to the square root of the distance between the plates.
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| 10. | A positively charged particle is released from rest in an uniform electric field. The electric potential energy of the charge ? | |
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decreases because the charge moves opposite to the electric field.
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increases because the charge moves along the electric field.
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remains a constant because the electric field is uniform.
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decreases because the charge moves along the electric field.
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