Match List I with List II
|
List - I |
List – II |
||
|
(A) |
Rod rotated with angular velocity ω in a uniform magnetic field |
(I) |
e = e0sinωt |
|
(B) |
Coil is rotated with angular velocity in a uniform magnetic field |
(II) |
e = B/v |
|
(C) |
Rod is moved with linear velocity v in uniform magnetic field |
(III) |
Constant |
|
(D) |
When a rectangular coil is moved in a magnetic field induced emf is |
(IV) |
$e=\frac{Bωl^2}{2}$ |
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 3
EMF induced in rod rotated with angular velocity ω in a uniform magnetic field is $ e= \frac{1}{2} b\omega l^2$
Coil is rotated with angular velocity in a uniform magnetic field , EMF induced is $ e = e_0 sin\omega t$
Rod is moved with linear velocity v in uniform magnetic field , EMF induced is $ e = Blv$
When a rectangular coil is moved in a magnetic field induced emf is zero.