What was the effect of 2 batteries on the brightness of the bulb?
Batteries produce their energy with chemical reactions that take place inside the battery. Power utilities use electric generators to provide110 volts to home outlets. Power lines may carry 20,000 volts along the length of the wire. While most of us depend on electricity from local power plants, emergency services like hospitals usually have a back-up generator to produce some electricity for their needs if there is a power outage. 8. What are some ways you can prepare for a power outage at your home? • Resistance 9. Using a regular straw and a smaller diameter cocktail straw, compare how easy it is to blow air through them. The flow of electricity through a circuit is similar to the flow of air in the 2 straws. If it takes more work to push the air, or the current, then we say that the object has more resistance. When you hook up a bulb in a circuit, the bulb resists the current causing the thin filament to heat and light up. 10. Compare the resistance of thin wire and thick wire. (Re
