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In an electromagnet, the negative side of the coil is said to "emit" the magnetic field lines- it is the north pole of the electromagnet. However, in alternating current, the energized wire alternates between positive and negative. As a result, a conventional electromagnet running on alternating current would constantly be undergoing a reversal of the poles.
Wiki User
∙ 14y ago
Wiki User
∙ 13y agoAlternating current can be used to magnetize iron. This is the principal that is used to close motor magnetic contactors.
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What HP generates electricity from flowing water?
1.The water stored in the dam posess potential energy. This will be allowed to jet on to turbine. thus the energy is converted into kinetic energy. The rotation of turbine will be converted into electricity by the principle of dynamo/generator.ie., when a coil cuts magnetic flux, electricity will be generated.-Hydro electricity 2.The water can be converted in to steam in boilers by using thermal energy. This thermal energy will be in turn used for rotation of turbine. This rotation of turbine will be converted into electricity using principle of Dynamo.-thermal electricity. This thermal energy is also generated by using nuclear material like Uranium in reactors . It converts water into steam to run turbine. Thus running turbine result in electricity is nuclear power. 3.The water waves of sea or rivers can be used for motion of turbines. this rotation can be used for conversion into electricity by the principle of dynamo- widal electricity
What fibers are used to make paper?
wood pulp fibre can be used to make paper
What part of a flowering plant is often used to make oil?
The Seed of the flower will be used to make oil
Why a buffer is used and the effects of a buffer on a solution?
A buffer is used to resist the change in pH when acid or alkali is added to a solution. This makes it a stable environment, eg. for enzymes. The buffer stops the pH of the solution changing too drastically.
What is the function of antennae?
An antenna is an electric device that involves two way communication. It converts electricity into radio waves and vice versa.
Did Michael Faraday invent magnetism?
No. but he used an electromagnet to make discoveries about electricity.
Did Michael Faraday invent the magnet?
No. but he used an electromagnet to make discoveries about electricity.
What material is used to make an electromagnet?
take any magnetic material wrap a metal wire around it which conducts electricity and pass electricity through it
Can a solar panel be used to power a magnet?
It depends on the amount of sunlight and the amount of electricity the panel can make if the magnet is an electromagnet, but it is possible.
10 ways an electromagnet can be used?
1. to make electricity 2. to lift up cars 3. motors 4. speakers 5. MRIs ...
How is a turbine used currently?
a turbine puts pressurized steam in a shaft where it rotates to form electricity with a simontaneous rotation of an electromagnet which together forms electricity.
What is difference between of Electromagnet and Electric Magnetic Field?
An electromagnet is a magnet that only generates magnetic forces when electricity is running through it, basically a magnet that can be turned on and off. An electromagnetic field is the magnetic force generated when an electromagnet is used.
What would be used to make a simple electromagnet?
Some material whose spins can be aligned (and in turn align spins of other materials close enough to feel the effects of its magnetic field) and electricity.
What are the devices that make used of electromagnet?
AC/DC Motors, Generators etc. are the devices that make Used of electromagnets.
How is electromagnet the same as permanent?
An electromagnet is only magnetic while current is flowing through the coils. A permanent magnet is always magnetic, and does not need electricity. An example of an electromagnet at work is in a metal scrape yard, where a large electromagnet is used by a crane operator to lift ferrous metals into a crusher (scrapped cars, for instance). The metal drops into the crusher when the electricity is switched off by the crane operator. Therefore, they are only really similar when both are magnetised.
How hydropower is used to produce electricity?
Water is filtered through a slot that has a pinwheel-type object. The water flows through and spins the wheel, and an electromagnet is placed at the end, producing electricity.
Can fire be turned into electricity?
Not directly, but fire can be used to help make electricity, for example fire can be used to boil water and make steam, steam can be used to power generators which in turn make electricity.
