Electric Circuits Essay

Electric Circuits Study Guide 1. What are the requirements for an electric circuit? (What elements must you have?) 2. What is a closed circuit? 3. What is an open circuit? How do you create an open circuit? 4. In a series circuit, as the number of resistors increases, the overall resistance of the circuit ___ (increase, decrease, stays the same). 5. In a parallel circuit, as the number of resistors increases, the overall resistance of the circuit ___ (increase, decrease, stays the same). 6. In a series circuit, as the number of resistors increases, the overall current in the circuit ___ (increase, decrease, stays the same). 7. In a parallel circuit, as the number of resistors increases, the overall current in the circuit ___ (increase, decrease, stays the same). 8. What is the equivalent resistance of a series circuit with a 12 V cell and two 3 Ω resistors? 9. What is the equivalent resistance of a parallel circuit with a 12 V cell and two 3 Ω resistors? 10. Complete the following sentence. When one light bulb, connected in series with multiple light bulbs, burns out… 11. Complete the following sentence. When one light bulb, connected in parallel with multiple light bulbs, burns out… 12. In our homes, what prevents too much current from flowing through a circuit, heating the wire and possibly catching something on fire? 13. Which light bulb has more resistance, the bulb with the thicker filament or the bulb with the thinner filament? 14. If both light bulbs from #13 are connected to their own 12 V battery, which will be brighter? Consider Ohm’s law. 15. If the two light bulbs from #13 are connected in series, the voltage drop across the thicker filament is ___ (greater than, less than, equal to) the voltage drop across the thinner filament light bulb. 16. If the two light bulbs from #13 are connected in series, the current