Pre Lab 6

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North Carolina A&T State University *

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252

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Electrical Engineering

Date

May 24, 2024

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pdf

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Uploaded by ColonelExploration3036

Pre-Lab 6 ( Voltage in Simple DC Circuit and Ohm’s Law ) 1. What do you predict for the brightness of the bulbs in Figure 6-1a and Figure 6-1c? From the general understanding of the relationship between brightness and current, it can be safe to assume that the brightness in both situations will remain the same. This is because current remains the same. 2. What do you predict for the brightness of the bulbs in Figure 6-2 and Figure 6-1a? In Figure 6-2 the circuit is connected to two batteries. Therefore, the current is double that of Figure 6-1a, even though they have the exact same set up. Due to the current in Figure 6-1a being half that of Figure 2, Bulb D would have more brightness than Bulb A. 3. How will you measure the voltages between points 1 and 2 in the three circuits shown in Figure 6-3? What equipment will you use? To measure the voltage between points 1 and 2 you need to measure the potential difference across the batteries. The equipment that will be utilized for this will be the voltage sensor and most likely the computer software. 4. What do you predict will happen to the voltage across the battery in figure 6-7a when you close the switch? The most probable outcome across the battery when the switch is closed, is nothing. The voltage of a battery does not increase or decrease if a switch is open or closed. The voltage is going to stay the same. 5. What is the function of the power supply in figure 6-12 and 6-13? The function of the power supply in figure 6-12 as well as 6-13, is to provide different voltages so that the potential difference in the circuits has its own unique flow of current. Rahzel K. Khalif PHYS 252-003 March 2, 2023 TA Quadre Douglas PHYS 252 10/03/2023

6. How will you determine the quantitative relationship between the voltage across a resistor and the current flowing through it? What equipment will you use? The equipment used to determine the quantitative relationship between voltage across resistors and current flow will be the computer-based laboratory system, as well as the current and voltage sensors. This will ultimately be determined by understanding the relationship between voltage and current across said resistor.

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