Saved Bookmarks
| 1. |
If a coil of area 0.15m^(2) and 50 turns is perpendicular to a magnetic field, which changes from 5xx10^(-3) to 2xx10^(-3)T in 30 ms. Calculate the induced e.m.f. |
|
Answer» SOLUTION :`A=0.15m^(2),N=50,dt=30xx10^(-3)s` `dB=2xx10^(-3)-5XX10^(-3)=-3XX10^(-3)T` `dphi_(B)=A.dB=0.15xx(-3xx10^(-3))=-0.45xx10^(-3)Wb` `varepsilon=-N(dphi_(B))/(dt)=(-50xx(-0.45xx10^(-3)))/(30xx10^(-3))=0.75V` |
|