Which of the following best describes alternating current? A. current that constantly turns on and off

B. current in which charges change direction

C. current that gains and loses electrons

D. current that increases and decreases in temperature

a pan containing water is placed in a positio n where it is exposed to a 10 mile per hour wind. the pan contains a uniform depth of 1.27 cm of water, is quite wide, and has a length of 2.44 m in the wind direction. the water in the pan is at a constant temperature of 15.5 °c.