In the manufacturing industry , an air extractor was installed, when doing an inspection, the technicians noticed that there is a uniformly distributed charge in the casing with a value of 25 G, then they measured the radius of the motor and this was 15 cm, with these data they calculated the electric field at a distance of 15 cm. then they measured the radius of the motor and this was 15 cm, with this data they calculated the electric field at a distance of 10 cm and 18 cm from the center of the motor, then the electric field at a distance of 10 cm and 18 cm from the center of the motor. cm from the center of the motor, then the comparison is made with the calculated fields in the lateral part (covers). (covers), also the calculation of the field in the arrow of the same, which had a length of 16 cm, such calculation was made at 29 cm from the center of the motor, which had a length of 16 cm, such calculation was made at 29 cm from the center of the motor. calculation was made at 29 cm from the center of the arrow, then a test is made to the motor by introducing a charged particle (proton). particle (proton), thus calculating the acceleration that existed for each of the previously calculated fields. previously calculated. Finally, the technicians wanted to calculate the force that was exerted between the two charges, and they and considered that the second charge was at one third of the radius of the motor.