Recent content by Luke0034

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    Voltage across two different circuits

    So if I'm understanding correctly, does this mean that according to Ohm's Law, the amount current flowing in a circuit will always change to a quantity that coincides with the potential dropping to zero after the last resistor in the circuit?
  2. L

    Voltage across two different circuits

    I guess what I'm not understanding about this analogy and my big question in general is why the voltage drops all the way to zero after the last resistor. So let's just use your water analogy. The voltage starts out in a pipe and travels through a resistor (pipe with smaller radius), so...
  3. L

    Voltage across two different circuits

    I have a question regarding the voltage of two different circuits. In the first circuit there is a 75 volt battery with just one 4 ohm resistor. In a separate second circuit there is a 75 volt battery again, but this time there is a 4 ohm resistor and 9 ohm resistor in series. My question is...
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    Irrelevance of electrical potential

    Can you explain what you mean by "add a constant to it." Maybe an example would help me understand what you're saying. Thanks.
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    Irrelevance of electrical potential

    Thank you for the answer, I think I understand. So would I be correct to say that if the electrical potential at a certain point was 200 J/C, then that means that it would take 200 J of energy to move a 1 C charge from infinity to that point? But in terms of a circuit, the electrical potential...
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    Irrelevance of electrical potential

    In regards to voltage and electrical potential, I have a question. I understand the voltage to be the difference in electrical potential of two separate points. So in an analogy am I correct to compare this to a bowling ball being 4 feet off the ground. So the bowling ball has a gravitational...
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    Please Explain Voltage

    Thanks Sheldon, I freaking love you!
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    What is the voltage at the end of the circuit?

    1. 15 V is what I think 2. 0 V is what I think. And this definitely isn't homework. I'll pulled a pic off google images and made these questions. I could care less about the value if the answer, I want to know the reasoning behind it. Is 1 and 2 correct and why?
  9. L

    Rise in Voltage across a battery

    Let's say you have a circuit connected to a 15 volt battery. If current travels from the negative terminal of a 15 volt battery to the positive terminal, the voltage is said to rise 15 volts. I believe this is right, but correct me if I'm wrong. Assuming that is right, then does that mean that...
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    Please Explain Voltage

    Thank you so much, and what would be the equivalent of resistors in series? What would be a capacitor in this analogy?
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    What is the voltage at the end of the circuit?

    I have a some questions that will help me understand voltage better. 1. What is the voltage from the positive terminal to the negative terminal? Why? 2. What is the voltage from point 7 to point 8? Why? 3. Is the electric potential at the very end of the circuit (negative terminal) zero...
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    Please Explain Voltage

    Homework Statement I am trying very hard to understand voltage. I am a second year engineering student in a physics II class. I am having trouble grasping the concept of voltage. Could you guys please help me out with a few questions. Please correct me if I am wrong, but isn't voltage the...
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    What is the electric field at this point?

    Homework Statement A charge -3.2 micro-coulombs is spread evenly throughout a rod of length (a). At a distance (b) from the rod, what is the electric field? a = 1.2 m b = 3.4 m So basically, you start at zero and then there's a line of charge horizontally to the right from 0 to 1.2 meters...
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    What is the charge density on the insulator?

    Homework Statement Insulator has a 3 cm radius and is a sphere. It has a total charge of -4.2 uC. I need to find the charge density of the insulator. Homework Equations sigma = total charge / volume.... I think? The Attempt at a Solution After using the above equation, I got -3.714E-8 C/m...
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    Electrostatic Force

    Thank you, that's makes a lot of sense. After reading a little bit, I understand newton's third law in an intuitive sense now.
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