Dekaliter is 10 times bigger than 1 liter.
1 Dekalite = 10 Liters
The voltage from one side of the battery all the way around to the other side of the battery is 12v .
If 4 of those volts show up across the circle-thing, then the rest of the 12v ... 8v ... Must show up across the set of parallel rectangles.
To get that answer, I subtracted the 4 from the 12.
Just like it says in choice-C.
Answer:
The introduction of machines to make work done more easier and faster
A
More concentrated means more collisions per unit volume, and as the volume stays the same and only concentration changes, the there are more collisions