Configuration/Explanation | No explanations or misconceptions (0) | Identifies a connection, but it is either incorrect or incoherent (0.5) | Correctly identifies all the relevant components (1) |
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Point (P) | No answers or answers contain misconceptions. | Student interprets the force feedback in the context of visualization as not proportional. | Point charge exerts a greater force when closer to it than farther. |
Line (L) | No answers or answers contain misconceptions. | Student interprets the force feedback in the context of visualization as not proportional. Student identifies individual scenarios, but does not interpret the difference correctly. | Line charge exerts greater force when close to the line, but the force decreases inversely proportional to distance as you move away from the charge. |
Ring (R) | No answers or answers contain misconceptions. | Student interprets the force feedback in the context of visualization as not proportional Student thinks that force at center and away from ring is the same. | The force is zero at the center, increases from the center to the circumference and decreases outside the ring. |