Saved Bookmarks
| 1. |
Two coils A and B have mutual inductance `2xx10^(2)` henry if the current in he primary is i=5 sin `10^(pi)` t then the maximum value of emf induced in coil B isA. `pi` voltB. `(pi)/(2)` voltC. `(pi)/(3)` voltD. `(pi)/(4)` volt |
|
Answer» Correct Answer - c `M=2xx10^(-2)H` and `i=5 sin 10pi` t induced emf `e_(B)=-M(dL_(A))/(dt)` where `e_(B)` =emf in coil B `e_(B)=-2xx10^(-2)(d)/(dt)[5 som 10pi t]` `e_(B)=-pi[cos 10 pi t]` The maximum value of emf induced in coil `B=pi V` |
|