Experiment Report Electromotor - Physics Lab Practice College

ELECTRICITY & MAGNETISM

EXPERIMENT REPORT

Electrometer

A.      Materials required

• Battery
• Power Supply
• Coil
• Cutter
• Scissors
• Glue

B.    Experiments to be proven

The Procedures

        1. Preparing Material & Equipment.

        2. Leave about 7-8 cm and wind the wire 10 - 35 times around the AA Battery, Leave 7 - 8 cm at       the other end of the coil.

        

    3. Wrap the ends around the coil 2-3 times to hold the coil together with both ends extending  perpendicular to the coil.

          

           4. Strip off the insulation completely at one end and only half of it at the other.

 

5.      Fully insert two metallic stands into predrilled holes in the board.

   

6.      Make the Board to support soil and connect it to the power supply using alligator clamp

                                              

    Findings

        Electromotor generate when power supply turn on, this happened because of a un-insulated (bare copper) parts of the coil wire contact the metal stands the current from the battery flows through the coil making it an electromagnet with North and South poles. This electromagnet interacts with the permanent magnet (North and South poles attract each other while the same poles repel). Motor starts to spin until the contact is broken when an insulated part of the coil end comes into contact with the stand. However, the coil continues to spin due to inertia and then the process continues. Technically speaking this motor is a single pole pulse motor.

 

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