# Moving in an electric field domain

A positively charged particle moves to the right on a straight line in an electric field domain, as shown in diagram [A]. Diagram [B] shows the electric potential of the electric field domain in [A] as a function of the position. Which of the following statements is correct?

a) The direction of the electric field at position d is the same as the direction of the movement of the charged particle.
b) The electric field strength at position d is smaller than that at position 3d.
c) The magnitude of the electric potential difference between positions d and 3d is $$1 \text{ V}.$$

×