In equations E=.-V/r Negative sign indicates that:
Correct answer: B. E' points toward decreasing V
- A. E' points towards increasing V
- B. E' points toward decreasing V
- C. E' is perpendicular to V
- D. E' is parallel to V
- E. E' is opposite to V
Explanation
The relation E = − dV / dr (or in vector form E = −∇V) shows how the electric field relates to electric potential. The negative sign indicates that: The electric field always points in the direction in which the electric potential decreases most rapidly.
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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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