The potential difference between two points in an electric circuit is the work done when a coulomb of charge passes between the points. You can calculate the size of a potential difference using this equation: V = W Ã· Q. 1  V is the potential difference in volts, V. 2  W is the work done (energy transferred) in joules, J.
Thanks for you help. Yikes, now you got me thinking! I went and my bottle of wilton vanilla and sure enough, it was like I went to the medicine cabinet and opened the bottle of rubbing alcohol! Extract is about 35% or so alcohol, so it may smell like alcohol - but the primary aroma should be vanilla.
All vanilla extracts are free of it, too, wherever you go.. Acute toxicity studies in animals indicate that castoreum extract is nontoxic by both oral and dermal routes of administration and is not irritating or phototoxic to skin.Skin sensitization has not been observed in human subject tests. major ingredients supplier told us this about some of their vanilla flavorings: [Castoreum] is not a common raw material that is used and we don't use it, so I can safely say that our natural vanilla flavors do not contain any animal juices.