caption: an electric field
exif: {"Image DocumentName": "Potential DifferenceA. The change in energy of a positive test charge as it is moved closer to a positively charged object.", "Image ImageDescription": "B. The volt. 1. Unit of potential difference. 2. 1volt=1joule/1coulomb. 3. Definition: In an electric field when 1 Joule of work is required to move a one coulomb of charge between two points.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}