| 1. | Assertion : Electric field is discontinuous across the surface of a spherical charged shell. Reason : Electric potential is continuous across the surface of a spherical charged shell ? | |
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Assertion is correct, reason is correct; reason is not a correct explanation for assertion
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Assertion is incorrect, reason is correct.
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Assertion is correct, reason is correct; reason is a correct explanation for assertion.
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Assertion is correct, reason is incorrect
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Report Question| 2. | A charge is brought from a point on the equatorial plane of a dipole to its mid-point. Which of the following quantities remains constant ? | |
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Force on the charge brought.
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Electric potential
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Electric field
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Torque exerted by the charge on dipole.
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| 3. | The positive terminal of 12 V battery is connected to the ground. Then the negative terminal will be at ? | |
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– 12 V
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zero
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– 6 V
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+ 12 V
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| 4. | 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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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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independent of the distance between the plates
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inversely proportional to the distance between the plates
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| 5. | When air is replaced by a dielectric medium of constant K, the maximum force of attraction between two charges separated by a distance ? | |
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increases K^-1 times
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decreases K times
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remains unchanged
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increases K times
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| 6. | When air is replaced by a dielectric medium of constant K, the maximum force of attraction between two charges separated by a distance ? | |
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increases K^-1 times
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decreases K times
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remains unchanged
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increases K times
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| 7. | The electric potential V at any point O (x, y, z all in metres) in space is given by V = 4x² volt. The electric field at the point (1 m, 0, 2 m) in volt/metre is ? | |
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16 along positive z-axis
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16 along negative x-axis
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8 along negative x-axis
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8 along positive x-axis
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