Which is true about batteries?
AThey all contain graphite rods and zinc electrodes.
BThey all contain parallel cells that increase energy output.
CThey always contain different cells that work together to produce energy.
D.They often have identical cells in series to increase energy output
AThey all contain graphite rods and zinc electrodes.
BThey all contain parallel cells that increase energy output.
CThey always contain different cells that work together to produce energy.