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:
$l$ = length of the rod
$B$ = magnetic field
$v$ = speed of the rod
$A$ = area of the loop
If the rod moves at speed of $v$, it travels a distance of $\Delta x$, in a time $\Delta t$;
Therefore, the area of the loop changes by an amount of $\Delta A$ = $l \Delta x$
 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^{?2}m

b)
5.1 × 10^{?2}m

c)
5.9 × 10^{?2}m

d)
6.2 × 10^{?2}m
