Induced EMF in a moving conductor - Electromagnetic Induction
Induced EMF in a moving conductor
Lessons
Notes:
In this lesson, we will learn:
- Moving a conductor in a uniform magnetic field results in an induced emf across the conductor.
- How to find the magnitude of the electromotive force?
- How to find the direction of the electromotive force?
Notes:
- Moving a conductor in a uniform magnetic field results in an induced emf across the conductor.
- As the conductor moves, there is a change in magnetic flux, due to the change in area of the conductor that is exposed to the magnetic field lines.
- Change in flux results in electromotive force induction and induced emf in the loop.
- According to Faraday’s law:

= length of the rod
= magnetic field
= speed of the rod
= area of the loop
If the rod moves at speed of , it travels a distance of , in a time ;
Therefore, the area of the loop changes by an amount of =
- The direction of the induced current is in a way to oppose the change in flux.

-
Intro Lesson
-
a)
0V
-
b)
0.090V
-
c)
0.36V
-
d)
0.45V
-
-
a)
0.10 m/s
-
b)
0.75 m/s
-
c)
1.9 m/s
-
d)
2.4 m/s
-
-
a)
3.5 × 10?2m
-
b)
5.1 × 10?2m
-
c)
5.9 × 10?2m
-
d)
6.2 × 10?2m
-
