Saved Bookmarks
| 1. |
The self inductance L of a solenoid of length l and area of cross-section A, with a fixed number of turns N increases asA. l and increaseB. l decreases and A increasesC. A increases and A decreasesD. both l and A decrease |
|
Answer» Correct Answer - B The self-induction L of a solenoid of length l and area of cross section A with fixed number of turns is `L = (mu_(0) N^(2) A)/(l)` Obviously, L increases when l decreases and A increases. Choice (b) is correct. |
|