2. CHAPTER 6 FISIKA SMP KELAS IX

3. ADVANTAGES OF MAGNETIC To lift iron materials

4. FISIKA SMP KELAS IX ADVANTAGES OF MAGNETIC Battery Switch Soft iron anchor Interruptor Beater Electromagnet 1. Electric bell If the switch is pushed, the electric will flow so that the reel becomes a magnetic so the iron anchor will be pulled/the beater will touch the gong. When the iron anchor is pulled by magnet, the electric will be stop in the interruptor, It makes the iron anchor will back to the first position and the electric flows in the series and the gong will be rung again. These will be repeated while the switch is pushed

5. FISIKA SMP KELAS IX ADVANTAGES OF MAGNETIC 2. Relay Relay is a tool with small electric energy that can connect or stop big electric. In other word, relay works as switch on big electric series. Saklar Elektromagnet Motor Pegas K If the switch is closed, the electric will flow to electromagnetic and have contact in K and the electric flows in secondary series( the motor twist).

6. FISIKA SMP KELAS IX ADVANTAGES OF MAGNETIC 3.Telephone  Telephone consist of two main parts, they are sender and receiver instrument.  Telephone works by change voice wave into electric wave.

7. FISIKA SMP KELAS IX ADVANTAGES OF MAGNETIC 4.Magnet force  Oersted Experiment shows that around electric conductor there are magnet area.  If electric conductor is put in magnet area there will be interaction between magnet area and electric.  The interaction produce a force called Lorentz force. F = B I ℓ  Definition of magnet force or Lorentz force can be used to understand the process of transformation of electric energy to moving energy.  According to that, nowadays there are many tools use Lorentz force.

8. FISIKA SMP KELAS IX ADVANTAGES OF MAGNETIC a. Electric motor

9. FISIKA SMP KELAS IX ADVANTAGES OF MAGNETIC b.Electric measurement tool  Scheme of electric measurement tool of rotating reel type. If it is flowed by electricthe reel will be rotate because occured a Loretz force.  The quantity of Lorentz force decided by how strong the electric flowing in the reel. So, the bigger the electric flowing in the reel, the bigger the scale showed by the pointer.

10. FISIKA SMP KELAS IX THANKS