Magnetic Induction lab worksheet

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San Francisco State University *

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071106400

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Physics

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Feb 20, 2024

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pdf

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6

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Uploaded by DrSeaLion1130

Nicole Lopez Professor Walecki (from the group assignment. I'm in a group by myself since I was doing the SAT the day this assignment was assigned which was April 13,2022). 0. Introduction ● In this worksheet, you will be guided to explore the simulation and understand the nature of the physical world. Answer all the questions. You are also encouraged to explore further. ● Download the simulation on https://phet.colorado.edu/en/simulation/faraday ● If you cannot open the application, you might need to install Java first https://www.java.com/en/download/windows-64bit.jsp 1. Bar Magnet Q1.1 Describe how does the compass interact with the bar magnet The compass interacts by showing that the needle of the compass will point toward the direction of the south to which in this stimulation it would be the reed needle while the white needle will be pointing to the north once brought close to the magnet. Q1.2 If we say the magnetic field lines are pointing from North to South outside of the magnet, what happens to it when it’s inside the magnet? The magnet inside will remain the same going from north to south.
2. Pickup Coil Q2.1 When you move the magnet towards the coil (as diagram), describe what happen inside the coil The coil light build will start to turn on and off when passing through the north and south poles of the magnet and the electrons inside of the coil will start to rotate around the magnet. Q2.2 Explain your answer above The reason as to why was because of the electromagnetic forces that are involved as the coil moves through the stimulation magnet from in the direction of north to south.
Q2.3 When you move the coil towards the magnet, describe what happen inside the coil There is a change in magnitude to which seems to be occurring inside of the coil. Q2.4 When you move the magnet away the coil, describe what happen inside the coil The inside will remain in straight lines since the coil has already been removed from the magnet. Q2.5 Suggest how you can make the lamp brighter You can make the lamp brighter by the strength of the magnet bar and placing the coil towards the magnet. Q2.6 Change the bar magnet strength to 20%. Suggest any new observation for the lamp when you move the magnet The light bulb will not be as bright and will turn on and off very fast as compared to the bar magnet strength being 75%. 3. Electromagnet Q3.1 Suggest two ways of how you can make the induced magnetic field strength weaker
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1. The farther apart the field lines are. 2. The more use of the magnetic field the more and more weaker the magnetic field will be. Q3.2 What happens when you reverse the direction of the battery? When you reverse the direction of the battery then the battery will not be able to work since north and south go together in order to work rather than the north to north or the south to south. Q3.3 What happens when you change the current source to AC? The current will be 50 percent and the electrons in the battery will be moving up and down at a very rapid time. 4. Generator (Yes, I know Tab #4 should be a transformer but trust me, do this first!) Q4.1 Open the water tap. You should see the lamp is on continuously. Explain why. The reason as to why is because the force of energy that is being transferred from the water leaf to the lamp is energy and electrons being used. Q4.2 Suggest FOUR ways to obtain a brighter lamp 1. The enforcement of the coil when water falls on to the leaf fan. 2. The rate to which the water will fall. 3. If the strength of the magnet bar is increased. 4. The rate at which the compass and the leaf fan is moving such as 100 RPM will control the brightness of the lamp. 5. Transformer
Q5.1 Move the battery and coil towards the right quickly and stop. Describe what happened to the lamp. The light of the lamp will slowly turn off and turn on at a very fast rate as it is being dragged to the right. Q5.2 Suggest TWO ways of how you can keep the lamp on forever using the battery coil. (Do not change to AC) 1. Move the battery coil with respect to the bulb coil. 2. Move the battery coil in the middle of the bulb coil so in order to keep the lamp on forever. Q5.3 Change the current source to AC. You should see the lamp go shining continuously. This is a process called MUTUAL INDUCTION. Explain why this happened step by step. This is happening since the electrons are moving at a constant rate to which will make the lamp light up especially since the AC has a current supply of 50 percent. Q5.4 Suggest SIX ways to increase the brightness of the lamp when AC is used 1. Increase the supply voltage. 2. Change the bulb for a higher wattage bulb. 3. Just by reducing the resistor value than the original value. 4. Increase the current supply percentage to higher than 50 percent. 5. Place the lamp directly under the AC current supply. 6. Reduce or remove the resistor.
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