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A wire in a lamp that is turned on would have a magnetic field around it?
Wiki User
∙ 7y ago
Yes. Any current will produce a magnetic field. Note that such a field might be hard to detect, for example with a compass - since the AC current used in homes changes directions 50 or 60 times per second. Since this is much faster than the compass needle can follow, it will only show the average magnetic field, which is zero.
Wiki User
∙ 7y ago
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What is used to represent magnetic field lines on a diagram?
Curved lines are used to represent magnetic field lines. The closer together they are, the stronger the magnetic field. Arrows are added to show the direction a north pole would move if placed at that point.
Would an asteroid fragment generate a magnetic field when entering the earth's atmosphere?
Yes, it generate a magnetic field when it enters into the earth atmosphere.
How can you turn off a magnetic field by a current?
If the magnetic field is caused only by a current, you can turn the current off.If you have another magnetic field, for example due to a permanent magnet, with a current you can create a magnetic field that counters the first one. But that will only work in certain regions in space; you can't cancel such a magnetic field everywhere in space.
What is the value of earth magnetic field?
The magnetic field of planet Earth is very important for sustaining life. The magnetic field creates a magnetic map around the world, which birds use to navigate. Also do they create the magnetic north and south pole. But the most crucial thing about our magnetic field is that it protects our atmosphere from solar activity, otherwise our atmosphere would be blown away by solar wind and everything on this planet would die. This happened to Mars, which had oceans and rivers and an atmosphere billions of years ago, but when it's core dried up, it lost it's magnetic field by which the atmosphere was vulnerable and blown away. Causing the planet too become freezing cold and all water to vanish.
What instrument measures changes in Earth's magnetic field?
You can show that the Earth has a magnetic field by looking at a magnetic compass.The north end of the compass points to the north magnetic pole, and does so everywhere on Earth. It does this by aligning itself to the Earth's magnetic field. If there weren't a magnetic field, then a compass needle would not point to any consistent direction.See related links.
Region around a magnet in which magnetic force can act?
Magnetic freild
What is the region around a magnet where the magnetic force act?
This would be the magnetic field.
How is the force affected when the current is reversed in a magnetic field?
The magnetic field would reverse.
What happens to the magnetic field if the current in the wire increases?
If the current in the wire increases, the magnetic field also increases.
What is induced by the rapid alternation of a magnetic field?
you would induce voltage therefore chanfing the magnetic field
What would happen if the direction of the current through a hall probe is reversed?
The idea is that the magnetic field of the device reacts with the external magnetic field. If the current is reversed, the magnetic field would also be reversed, and the reading would be the opposite.
What is magnetic field?
A condition found in the region around a magnet or an electric current, characterized by the existence of a detectable magnetic force at every point in the region and by the existence of magnetic poles.Read more: magnetic-field
What would happen if a pigeon detected a magnetic field?
There are theories around that some birds can actually detect magnetic fields, which they use to navigate on long migrations.
What evidence is there on earth having a magnetic field?
To start if we didnt have a magnetic field we would be fried by the suns radiation. The northern lights are evidence that we have a magnetic field surrounding earth.
Why doesn't the moon have a magnetic field?
Venus does not have a magnetic field because its rotational period is very slow. This means that if its core had a liquid metal component, it would not be moving fast enough to generate a field.
Do electric currents create magnetic fields?
yes. If current is flowing through a wire, the magnetic field is around the wire, like your fingers would be around the wire if you gripped it. If the current was alternating (AC) the field would collapse and expand in time with the alternations. One of nature's mysteries - to me anyway.
What would happen if field lines crossed?
Then, at some point, the field would go into two directions simultaneously, which doesn't make much sense. The magnetic field lines form continuous closed loops.The tangent to the field line at a point represent the direction of the net magnetic field B,at that point.The magnetic field lines do not intersect,if they did, the direction of the magnetic field would not be unique at the point of intersection.
