# Phet Lab

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Check “show battery” and “show cores”, watch what happens, adjust some variables 1. Why do electrons (blue dots) move? The flow of current (+) is opposite to the flow of the electrons. ; note if toward or away from + terminal of the battery. The electrons move because they are being attracted towards the positive side of the battery and thus move because of the attraction in the battery. 2. What does the Ammeter (on the left) measure? How is this shown in the sim? It measures the rate of electron flow in a circuit. This is showing the amps in the battery and it looks as a direct relationship with the temperature of the battery. As the battery temp increases so do the amps. 3. What role do the “green dots” in the resistor…show more content…
How can you tell? They are negative because they are flowing towards the postive side of the battery and away from the negative side of the batter. 9. What happens when you increase the resistance of the resistor? How does the current through the circuit, the speed of the blue spheres, the voltage across the battery, the temperature of the resistor, and the green particles in the resistor change? Why (or why not) does each of these change as they do? As you increase the resistance the flow of the electrons in the battery also slow down. IF the resistance is strong than the current flow is also slower. The blue spheres also move slower because of high resistance. The voltage for the battery is independent of the resistance. The temperature of the resistor increases as the resistance is decreased. The green particles are also increased when the resistance is higher. 10. What happens when you increase the voltage across the battery? How does the current through the circuit, the speed of the blue spheres, the resistance of the resistor, the temperature of the resistor, and the green particles in the resistor change? Why (or why not) does each of these change as they do? When the voltage is increased across the battery then the speed of the electrons are also increased. The current is faster with higher voltage. The speed of the blue spheres increases. The resistance of the resistor is also increased. The temperature is unchanged because it relies solely off