This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Physiology
[{'content': "Relation between current, electromotive forces and resistance in a circuit by Ohm's law is stated as \nSelect and explain. \nA. i = E/R, B. i = R/E, C. i = RE, D. All of the above", 'role': 'user'}, {'content': "Answer: A \nExplanation: The relationship between flow , pressureand resistance in a hydraulic system is compared with the relationship between current, EMF and resistance.Ohm's law, Current(I)=electromotive force(E)/ resistance(R) Flow(F)= pressure(P)/resistance(R) In vascular system, pressure is the effective perfusion pressure(mean intraluminal pressure at the aerial end -mean pressure at the venous end)and resistance is the peripheral resistance", 'role': 'assistant'}]