Which best describes the steps involved in the operation of an electric generator?
a.) the electric current passes from the power source, through the brushes, and into the commutator.
b.) the electric current passes from the brushes, through the slip rings, and to the collection device.
c.) the electric current passes from the slip rings, through the brushes, and to the collection device.
d.) the electric current passes from the commutator, through the brushes, and into the power source.

Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? question 2 options: the balloons rise at the same rate. both balloons are the same size. the ballons both rise. the cold ballon is larger than the warm balloon. the cold balloon expands and rises. the warm balloon shrinks and sinks. the warm balloon expands and rises. the cold balloon shrinks and sinks.