Global Journal of Science Frontier Research, A: Physics and Space Science, Volume 22 Issue 1

Figure 2: Schematic diagram of the circuit c. Carrying out the experiment 16. The power supply is turned on. 17. The range of values for voltage and current is selected, which are 0 to + 6V and 2.5A respectively. 18. With the knobs, it is adjusted to the desired voltage, which is 6V. 19. The three-prong clamp is removed from the universal bracket and placed on the hot plate and heated at temperatures above room temperature up to 333.15 K. 20. The clamp is reattached to the universal bracket. 21. The nut is brought closer to the electromagnet and it is allowed to attach to the electromagnet. 22. The voltage is reduced until the nut falls off. The power supply is immediately turned off. 23. The temperature of the head of the screw that makes up the electromagnet is recorded with the infrared thermometer. 24. The same procedure is repeated up to 22 times. For the first attempt, keep the electromagnet at room temperature. For the following attempts, it is sought to obtain several measurements for each range of 10 K, so that different measurements are recorded for the range of 293.15 to 303.15 K, then up to 313.15 K, etc. The experimental setup is shown in Figures 3 and 4. Figure 3: Experimental arrangement with the labelling of the dif erent materials Relationship between Temperature and the Holding Force of an Electromagnet in a Changing Magnetic Field © 2022 Global Journals 1 Year 2022 18 Global Journal of Science Frontier Research Volume XXII Issue ersion I VI ( A )