Ocean classes basis of electrostatic part 2
Created on 18th July 2025
Grade level: Grade 12th grade
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16 Questions
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Questions (16)
1. What is Gauss's law?
The net electric flux through a closed surface is directly proportional to the charge enclosed.
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2. Which of the following is an application of Gauss's law?
Calculating the electric field of a point charge.
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3. What does the potential gradient represent?
The change in electric potential per unit distance.
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4. According to Coulomb's law, how does the force between two point charges vary with distance?
Inversely with the square of the distance.
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5. What is an equipotential surface?
A surface on which the electric potential is constant.
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6. How does the electric field relate to potential gradient?
Electric field is the negative gradient of electric potential.
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7. What is the significance of equipotential surfaces in electric fields?
All of the above.
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8. Which equation represents Coulomb's law mathematically?
F = k * |q1 * q2| / r^2
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9. What happens to the electric potential energy as two like charges are brought closer together?
It increases.
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10. If the electric field is uniform, how does the potential change across a distance?
Linearly.
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11. Which of the following statements is true regarding electric field lines?
They never cross each other.
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12. What is the relationship between electric field strength (E) and potential (V)?
E = -dV/dx
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13. What does a negative potential gradient indicate?
That the electric field points in the direction of decreasing potential.
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14. Which of the following is NOT a property of equipotential surfaces?
They can carry a current.
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15. What is the effect of increasing the distance between two like charges on the force between them?
The force decreases.
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16. How does the electric potential change when moving from a point of higher potential to lower potential?
It decreases.
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