Saved Bookmarks
| 1. |
A certain current flows in the primary of an induction coil of mutual inductance 5 H. when the break occurs, an emf of 30,000 V is induced in the secondary. If the current in the primary falls uniformly to zero in `10^(-4)`s, find the current in the primary just before the break?A. 0.6 AB. 0.3 AC. 0.2 AD. 0.1 A |
|
Answer» Correct Answer - A `e=M(dI)/(dt)` `dI=(edt)/(M)=(30000xx10^(-4))/(5)=0.6A` |
|