Number of Electrons in Current · PhysicsBowl 2018 #25
Physics · electromagnetism
Problem
In a circuit, the flow of electrons in a horizontal wire produces a constant current of 3.20 A for a time of 3.0 hours. Which of the following choices best represents the number of electrons that pass through a vertical cross-section of wire during this time?
(A) 9.6 (B) 6.00 x 10¹⁹ (C) 7.20 x 10²² (D) 2.16 x 10²³ (E) 6.02 x 10²³