The electromagnetic field does not arise in itself, it is radiated by any device or a subject. Before assembling such device, it is necessary to understand the principle of emergence of the field. From the name it is simple to understand that it is set of magnetic and electronic fields which are capable to generate each other under certain conditions. Concept EMP is associated with a name of the scientist Maxwell.
It is required to you
- Glass glass, copper wire, wire, insulating tape, paper clips, two square batteries.
Instruction
1. Electromagnets are the metals capable to magnetization, such as nickel, iron and so on, at the movement of current around them. For a start create the power supply.
2. Take two batteries and connect them an insulating tape. Connect batteries so that poles on their ends were different, that is plus opposite to minus and vice versa. By means of paper clips attach a wire to the end of each battery. Further place one of paper clips at top of batteries. If the paper clip does not reach the center of each battery, perhaps, it is necessary to unbend to the necessary length. Fix a design by a tape. Make sure that the ends of wires are free and edges of a paper clip reach the center of each battery. Connect batteries from above, do the same on the other hand.
3. Take a copper wire. Leave about 15 centimeters of a wire straight lines, and then begin to wrap it around a glass glass. Make about 10 turns. Leave straight lines 15 more centimeters. Connect one of wires from the power supply to one of the free ends of the turned-out copper coil. Make sure that wires are well connected with each other. At connection the chain gives magnetic field. Connect other wire of the power supply to a copper wire.
4. When via the coil there is electric current placed inside metal will be magnetized. Paper clips will keep together, also metal parts of a spoon or a fork, screw-drivers will be magnetized and attract other metal objects, at that time so far the coil is influenced by current.