A negatively charged particle initially at rest is placed in an electric field that varies from point to point. There are no other fields. Then:
Correct answer: B. The particle moves opposite to the electric line of force passing through it.
- A. The particle moves along the electric line of force passing through it.
- B. The particle moves opposite to the electric line of force passing through it.
- C. The direction of acceleration of the particle is tangential to the electric line of force at every instant.
- D. The direction of acceleration of the particle is normal to the electric line of force at every instant.
Explanation
A negatively charged particle experiences a force opposite to the direction of the electric field (or electric lines of force).Since it starts from rest, it accelerates opposite to the field direction, following the line of force but in the opposite sense.The acceleration is along the line of force, not tangential or normal
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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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