Electricity Batteries and Current Physics Lab Report-UArizona Global Campus .

Electricity, Batteries, and Current You can access the simulations via the title of each section. Simply hoover your mouse over the titles and press CTRL + Click to follow the links. Battery Voltage: • Do the small blue spheres represent positive or negative charges? • Which side of the battery is labeled positive, and which side is negative? • How can you determine which side of the battery is positive and negative just by the location of the blue charges? Resistance in a Wire: • What characteristics of a resistor are variable in this model? • How does each affect the resistance? (Will increasing or decreasing each make the resistance correspondingly increase or decrease?) • Explain your ideas about why they change the resistance. Ohm’s Law: • As you change the value of the battery voltage, how does this change the current through the circuit and the resistance of the resistor? If the current or resistance remains constant, why do you think? • As you change the value of the resistance of the resistor, how does this change the current through the circuit and the battery voltage? If the current or voltage remains constant, why do you think?