Match List-I with List-II
List-I (Town Name) | List-II (Town Type) |
---|---|
(A) Chandigarh | (I) Administrative Town |
(B) Kandla | (II) Transport Town |
(C) Jharia | (III) Mining Town |
(D) Jalandhar | (IV) Garrison Town |
Choose the correct answer from the options given below:
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 \( r \).