An electron is held within electric field. What happens when electron is released?
Correct answer: D. It accelerates in the direction opposite to electric field
- A. It moves in the direction of electric field
- B. It accelerates in the direction of electric field
- C. It moves in the direction opposite to electric field
- D. It accelerates in the direction opposite to electric field
Explanation
The direction of an electric field is from positive to negative. An electron being negatively charged will be attracted to the positive side and hence will accelerate against the direction of the electric field.
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Electrostatics describes forces between charges through Coulomb's law, electric fields and field intensity, then uses electric potential to measure energy per unit charge. Capacitors store charge and electrical energy, with capacitance depending on geometry and dielectric material, not simply on the amount of charge present.
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