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Which of the following statements regarding vector fields is incorrect?
Vector fields provide information regarding both direction and magnitude.
When a known vector field exists, the source(s) of the field such as the number, size and/or location of the source(s) can be inferred.
Gravitational fields, electric fields and electric potential fields are all examples of vector fields.
When more than one source of a vector field is present, the magnitude of the resulting field can be determined by vector addition.