Multiple choice What is the current in the wire every 2.0 seconds, if 10 C charge flows through it? 0.2 A 5 A 20 A 1200 A 12 A Reveal answer Fill a bubble to check yourself B Correct answer Explanation Current is the ratio of charge to time. The quantity of charge passing through a cross section in 2 seconds is 10 C. The ratio of charge to time isI = Q / t = ( 10 C) / ( 2 s) = 5 C/s = 5 Ampere