- #1
elemis
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NOTE : My Current question and source of debate is in post number 10.
Lets say I have a square coil.
I accelerate it in a direction such that it is perpendicular to a magnetic field directed into the page.
As it enters the field and before it is completely in the field an INCREASING EMF will be induced.
The graph of EMF against time would be a straight line graph of CONSTANT GRADIENT through the origin which decreases to zero instantaneously once it is completely in the magnetic field, correct ?
http://www.a-levelphysicstutor.com/field-electro-mag-ind.php
Now, here we have a magnet being dropped into a coil.
The graph of EMF against time is more of a smooth pulse...
I have two questions :
1.) Why is it not a straight line that has constant gradient that then decreases instantaneously to zero ?
2.) Why does the EMF decrease to zero ? I know its because no lines of force are cut by the coil, but I cannot see how this is the case. I'm having trouble visualising it.
Lets say I have a square coil.
I accelerate it in a direction such that it is perpendicular to a magnetic field directed into the page.
As it enters the field and before it is completely in the field an INCREASING EMF will be induced.
The graph of EMF against time would be a straight line graph of CONSTANT GRADIENT through the origin which decreases to zero instantaneously once it is completely in the magnetic field, correct ?
http://www.a-levelphysicstutor.com/field-electro-mag-ind.php
Now, here we have a magnet being dropped into a coil.
The graph of EMF against time is more of a smooth pulse...
I have two questions :
1.) Why is it not a straight line that has constant gradient that then decreases instantaneously to zero ?
2.) Why does the EMF decrease to zero ? I know its because no lines of force are cut by the coil, but I cannot see how this is the case. I'm having trouble visualising it.
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