12&13 please 9. What does it mean If material has a positive temperature coefficient?A. the resistance increases with a decrease in temperatureB. the resistance increases with an increase in temperatureC. the resistance decreases with a decrease in temperatureD. the resistance decreases with an increase in temperatureFor items 10–15, refer to the given graph below.5Nickel4Copper32PlatinumImage is from https://circuitglobe.com/resistance-1thermometer.html400600 800" 1000°10. Which of the following has higher resistance at approximately 400K?A. copper11. Which of the following has higher resistance at approximately 800K?A. copper12. Which of the following has higher resistance at approximately 1000K?A. copper13. At which temperature does platinum have the resistance of 2 ohms?B. nickelC. platinumD. noneB. nickelC. platinumD. noneB. nickelC. platinumD. noneA. 400KB. 600KC. 800KD. 1000K14. At which temperature does cooper have the resistance of 3 ohms?A. 400KC. 800K15. Which solid conductor shows the highest resistance?C. platinumB. 600KD. 1000KA. copperB. nickelD. none

9. Given: Material has a positive temperature coefficient

9. What does it mean If material has a positive temperature coefficient? A. the resistance increases with a decrease in temperature B. the resistance increases with an increase in temperature C. the resistance decreases with a decrease in temperature D. the resistance decreases with an increase in temperature For items 10-15, refer to the given graph below. 5 Nickel 4 Copper 3 Platinum Image is from https:// circuitglobe.com/resistance- thermometer.html 400 600 800 1000° 10. Which of the following has higher resistance at approximately 400K? B. nickel A. copper C. platinum D. none 11. Which of the following has higher resistance at approximately 800K? B. nickel A. copper C. platinum D. none 12. Which of the following has higher resistance at approximately 1000K? B. nickel A. copper C. platinum D. none 13. At which temperature does platinum have the resistance of 2 ohms? B. 600K 14. At which temperature does cooper have the resistance of 3 ohms? B. 600K A. 400K C. 800K D. 1000K C. 800K 15. Which solid conductor shows the highest resistance? C. platinum A. 400K D. 1000K A. copper B. nickel D. none 1.