1. It spans across Australia, connecting the eastern and western coasts.
2. It is one of the longest railway lines in the world, traversing diverse terrains.
3. It facilitates the movement of goods and passengers across Australia, contributing significantly to economic development.
List I (Soil Horizon) | List II (Characteristics/Nature) | ||
A. | A Horizon | I. | Zone of eluviation |
B. | E Horizon | II. | Unweathered mineral material |
C. | B Horizon | III. | Surface horizon with mineral material and organic compound beyond recognition |
D. | C Horizon | IV. | Zone of illuviation |
A battery of emf \( E \) and internal resistance \( r \) is connected to a rheostat. When a current of 2A is drawn from the battery, the potential difference across the rheostat is 5V. The potential difference becomes 4V when a current of 4A is drawn from the battery. Calculate the value of \( E \) and \( r \).