Each plate of a parallel-plate air capacitor has an area of 0.0020 m2, and the separation of the plates is 0.090 mm. An electric field of 2.1 × 106 V/m is present between the plates. The surface charge density on the plates, in μC/m2 , is closest to: A) 19 B) 39 C) 9.3 D) 28 E) 47
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Water constitutes about 70% of earth. Some important distinguishing properties of water are high molar concentration, small dissociation constant and high dielectric constant.
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An electrostatic force is a force caused by stationary electric charges /fields. The electrostatic force is caused by the transfer of electrons in conducting materials. Coulomb’s law determines the amount of force between two stationary, charged particles. The electric force is the force which acts between two stationary charges. It is also called Coulomb force.
Each plate of a parallel-plate air capacitor has an area of 0.0020 m2, and the separation of the plates is 0.090 mm. An electric field of 2.1 × 106 V/m is present between the plates. The surface charge density on the plates, in μC/m2 , is closest to:
- A) 19
- B) 39
- C) 9.3
- D) 28
- E) 47
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