State two ways by which the strength of an electromagnet can be increased. Name an example of a non-contact force. What is super insulation? Name one device that uses an electromagnet. Why do resistors have tolerance? What is electrical susceptibility?
State two ways by which the strength of an electromagnet can be increased. Describe the basic principle of a DC electric motor. Explain how the phenomenon known as electromagnetism relates to an electric motor. Explain about nodal analysis with a diagram. ...
To increase the strength of an electromagnet, you can increase the strength current, and there are several ways to do that. You can also increase the number of windings, lower the ambient temperature or replace your non-magnetic core with a ferro-magnetic material.It...
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1.An object that is surrounded by a magnetic field and that has the property, either natural or induced, of attracting iron or steel. 2.An electromagnet. 3.A person, a place, an object, or a situation that exerts attraction:a village that is a magnet for tourists. ...
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The position of an electromagnet’s north and south pole, though, can be controlled via the direction of the electrical current. Changing the direction in which the electrical current travels through the electromagnet will change the position of the poles....
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When demagnetized, they can be re-magnetized by changing their composition or placing them within a magnetic field of sufficient strength. An electromagnet, on the other hand, lose their magnetic capabilities in the absence of an electric current or electric field. ...
dynamo- generator consisting of a coil (the armature) that rotates between the poles of an electromagnet (the field magnet) causing a current to flow in the armature electric motor- a motor that converts electricity to mechanical work