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Q: What has magnetic properteis and can be controlled by a switch?
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When the suns magnetic poles switch positions?

Great switch


What is the difference between magnetic track and magnetic heading followed by airplanes?

As a defence America needs to develop a magnetic drone shot from the ground, attach itself to the bottom of an aircraft and intercept its mainframe to be controlled from the ground


What is the relationship between electricity and magnetism with an electromagnet?

Oesterd discovered that when an electric current flows through a conductor a magnetic field develops around the conductor. So when you switch on the electromagnet a current passes through a solenoid generating a magnetic field which can be controlled by either forming more or less loops or increasing/decreasing the amount of current passing through the solenoid.


What wattage does a 3-way light switch use in a single switch outlet?

A switch does not use wattage, or consume power which is a better way of putting it. It depends on what appliance is being controlled by the switch.


What is a electrically activated switch?

This is a switch that can be changed by applying power to a terminal of the switch (such as a key card access controlled door lock), as apposed to a switch that requires an outside force to change the position (such as a standard light switch).Additional AnswerA relay and a contactor are each examples of an 'electrically-operated switch'. Each operates on a similar principle. An 'operating coil' is used to energise or to de-energise a magnetic-operated mechanism which then either opens or closes the main contacts of the device. The operating coil may be controlled by a relatively-low voltage circuit, while the main contacts control a higher-voltage circuit.Relays tend to make/break light-current circuits, whereas contactors tend to make/break heavy-current circuits (e.g. motors).