» magnet

Urgent question about electric generators?

Admin — Fri, 02 Sep 2011 20:42:50 +0000

So does an electric generator produce current when a magnet is making contact with the coil, or is it just the magnetic field? Do generator run out, or go bad (say because the magnet loses its magnetism, or the coil wears down)?

Does it matter what the coil is made of (nickel, copper, aluminum, etc.)

Are Magnetic Generators Effective?

Admin — Thu, 01 Sep 2011 20:44:50 +0000

I’ve been doing some research trying to find out if magnet generators are effective, and if so where is the best place to purchase the specs to make one.
Supposedly, you CAN build them yourself with very little investment, and they will generate electricity throughout your whole house. I’m just hoping to find someone who has some knowledge, firsthand or otherwise, on the subject.

Help in creating renewable energy?

Admin — Tue, 05 Jul 2011 13:31:17 +0000

I need to make a relatively new invention for a physics research that’ll help save the environment; so, I thought about doing something regarding electricity. My inspiration was the hamster generator … which then evolved (in my mind) to be a wheel being spun endlessly by magnets, thus creating power. Too bad people have already thought of this idea before I did, BUT STILL I can’t find anyone anywhere with the right instructions for me to follow or make innovations on. PLEASE help me!

Also, magnets are going to lose their magnetic attraction/charge eventually, right? Regardless, I still want to make a magnet-powered generator.

Please help

Please give right answers. My life depends on it!!?

Admin — Sun, 19 Jun 2011 08:43:23 +0000

1: If you doubled the number of coils and doubled the voltage, what would be the increase in magnetic strength?
It would remain the same, since 2 / 2 = 1
It would be 4 times as strong, since 2 x 2 = 4
You can’t increase magnetism by increasing the voltage

2: What causes the loudspeaker cone to vibrate?
Sounds that come from the radio or TV
The movement of a magnet within a coil of wire with varying current running through it
The movement of electrons in the electromagnet

3: Why is wire wound in so many loops in commercial generators?
Many loops are needed to make AC electricity
Voltage depends on how many loops are used
No one is sure why they do it that way

4: Why are kilowatts used?
Because James Kilowatt invented electricity
So we don’t confuse them with watts
Using watts would result in much larger numbers

5: How many kilowatt-hours does a 100 watt light bulb use in 10 hours?
1 kilowatt-hour
1000 kilowatt-hours
.00

please help?

Admin — Sat, 18 Jun 2011 11:07:23 +0000

3: Why is wire wound in so many loops in commercial generators?
Many loops are needed to make AC electricity
Voltage depends on how many loops are used
No one is sure why they do it that way

4: Why are kilowatts used?
Because James Kilowatt invented electricity
So we don’t confuse them with watts
Using watts would result in much larger numbers

5: How many kilowatt-hours does a 100 watt light bulb use in 10 hours?
1 kilowatt-hour
1000 kilowatt-hours
.00

Can you find the flaw in this perpetual motion idea?

Admin — Wed, 15 Jun 2011 11:07:14 +0000

A fixed magnet sits at the bottom of a hollow, non-conductive cylinder with its north pole turned upward (into the cylinder). Through a slot near the cylinder’s bottom, another magnet is inserted with its north pole turned downward. Magnetic repulsion pushes the two magnets apart. Since the bottom magnet is fixed, the other magnet must rise, thereby gaining gravitational potential energy.

When the rising magnet reaches the top of the cylinder, it gets toppled out and falls. The gravitational potential energy turns into kinetic energy. The magnet lands on a lever which turns a reciprocating handle on a generator. Each time the magnet lands on the lever, the handle turns once fully around, thus converting the kinetic energy into electricity.

The magnet tumbles back into the cylinder, again with the north pole facing down, and the cycle repeats.

Why can’t this continue indefinitely, with free energy being continuously extracted?

Can you find the flaw in this perpetual motion idea?

Admin — Tue, 14 Jun 2011 08:43:47 +0000

The magnet tumbles back into the cylinder, again with the north pole facing down, and the cycle repeats.

Why can’t this continue indefinitely, with free energy being continuously extracted?

science work help?

Admin — Thu, 09 Jun 2011 13:32:04 +0000

3: Why is wire wound in so many loops in commercial generators?
Many loops are needed to make AC electricity
Voltage depends on how many loops are used
No one is sure why they do it that way

4: Why are kilowatts used?
Because James Kilowatt invented electricity
So we don’t confuse them with watts
Using watts would result in much larger numbers

5: How many kilowatt-hours does a 100 watt light bulb use in 10 hours?
1 kilowatt-hour
1000 kilowatt-hours
.00

When you make electricity, where exactly do the electrons come from?

Admin — Sun, 05 Jun 2011 11:07:35 +0000

This was a question from my children and I’m not sure of the answer when I think about it. I know that if you spin a magnet in an magnetic field (or ferrous material work too?) that you’ll produce electricity. Electricity is the flow of electrons. If I think of the large generators that spin at a power company that are making large amounts of electricity, I realize that they are creating gazillions of electrons every second and sending them down the wire. Where, exactly, are these electrons coming from? When I think that electrons have mass (albeit very, very little), then I really wonder…..shouldn’t something be losing that mass? Could a physicist put this in layman’s terms for me?
Wow, what great answers. Each a little different but each a piece of the whole answer. Really a great explanation. Now, how to pick the best answer?

help fast please thanks if you help?

Admin — Sat, 04 Jun 2011 11:07:17 +0000

3: Why is wire wound in so many loops in commercial generators?
Many loops are needed to make AC electricity
Voltage depends on how many loops are used
No one is sure why they do it that way

4: Why are kilowatts used?
Because James Kilowatt invented electricity
So we don’t confuse them with watts
Using watts would result in much larger numbers

5: How many kilowatt-hours does a 100 watt light bulb use in 10 hours?
1 kilowatt-hour
1000 kilowatt-hours
.00