# Electromagnetic Induction Help Required

Discussion in 'The Projects Forum' started by erashish14, Mar 21, 2016.

1. ### erashish14 Thread Starter New Member

Apr 27, 2011
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0
Hi Experts,

I'm doing an experiment of Electromagnetic Induction (producing current by changing magnetic field i.e. by circulating magnetic wheel of N52 Neodymium Magnets around copper coil),

but what i found

when the speed of wheel is HIGH, the Output Current is LOW (in range of .02 microAmp) &

when wheel is about to stop i.e. when its speed is LOW, the Output Current is HIGH (in range of .11 microAmp)

check the video once (),

Kindly suggest where i'm doing wrong or what i need to change in my experiment, because as per Faraday's law, more frequent change in magnetic field produces more current, but its not seen in my experiment

Kindly help

Ashish
http://lightenmyways.blogspot.com/

Feb 26, 2011
219
38

3. ### blocco a spirale AAC Fanatic!

Jun 18, 2008
1,457
369
Measurement error. I keep seeing the minus sign appearing on the meter, is it set to DC?

GopherT likes this.
4. ### GopherT AAC Fanatic!

Nov 23, 2012
6,301
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@erashish14

Set your meter to AC volts.

Try again.

Then try with the coil of wire in different orientations (with hole of spool
- left to right
- front to back
- top to bottom
)

5. ### DickCappels Moderator

Aug 21, 2008
2,753
665
Per blocco, put your meter on an AC scale.

You can increase the output by putting a magnetic core in the coil.

6. ### hp1729 Well-Known Member

Nov 23, 2015
2,084
232
It takes a while for the meter to react. What does the output look like on a scope?

7. ### Alec_t AAC Fanatic!

Sep 17, 2013
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Because each magnet in turn moves towards and then away from the coil the coil produces an AC voltage. The averaged reading on a DC scale will be zero.