What does voltage describe?

What does voltage describe?

• A. The direction of the electric field
• B. How the electric field changes across some distance
• C. The total energy stored in the field
• D. The magnetic effect of charges

Answer: (B)

Voltage is the electric potential difference between two points. It tells you the work per unit charge required to move a test charge from one point to the other, and it is computed as the line integral of the electric field between those points. In other words, voltage captures how the electric potential changes as you move through space, which is directly related to how the field varies with distance. It’s not about the direction of the field, not the total energy stored in the field, and not about magnetic effects.

Voltage is the electric potential difference between two points. It tells you the work per unit charge required to move a test charge from one point to the other, and it is computed as the line integral of the electric field between those points. In other words, voltage captures how the electric potential changes as you move through space, which is directly related to how the field varies with distance. It’s not about the direction of the field, not the total energy stored in the field, and not about magnetic effects.