In the circuit diagram, what does the symbol made of two long lines and two short likes with a positive and a negative sign at each end represent?

it has to be b, about 97 percent.

a cold ice-tea.

pour in room temperature or cold water. cover the pitcher and refrigerate. steep white or green tea for 6 to 8 hours; steep black or oolong tea for 8 to 12 hours.jun 28, 2015

answer///scientific method;