Watch both of these videos:
http://www.youtube.com/watch?v=vdG7QooX1pg
http://www.youtube.com/watch?NR=1&v=iDH-RiDxqE4&feature=fvwp
Then, use what you have learned to answer the Inquiring Further question on page 755.
Next, watch these two videos:
http://www.youtube.com/watch?v=Tumb_MpFjDM
http://www.youtube.com/watch?v=g17f9J1-r-k
Make a list of the advantages and disadvantages to AC and DC current both on the national grid scale and in our homes.
