2. Extra Credit Challenge III Chapter 18

3. How it works Your group is your own table If you participate and avoid disqualification, you automatically get 40% of the extra credit for today. 1 st, 2 nd, and 3 rd place winners get 100%, 80%, and 60%, respectively. 5 questions about Chapter 18 will be displayed. The first group to run up and show me the correct answer will win the point value shown. If your answer is correct, your score goes up and if it is incorrect, your score stays the same.

4. #1 Find R eq of circuit (1 point) 20.0 V 2.50 Ω10.0 Ω 30.0 Ω

5. Answer: 10.0

6. #2 Find current through battery (2 points) 60.0 V 50.0 Ω30.0 Ω 15.0 Ω40.0 Ω

7. Answer: 1.00 A

8. #3 Find voltage across 10.0 Ω resistor (3 points) 60.0 V 7.25 Ω 10.0 Ω 20.0 Ω 25.0 Ω 15.0 Ω40.0 Ω

9. Answer: 20.0 V

10. #4 Find current through 8.00 resistor (4 points) 10.0 V 8.00 Ω30.0 Ω 15.0 Ω 40.0 Ω 15.0 Ω 40.0 Ω

11. Answer: 0.242 A

12. #5 Find equivalent resistance of the circuit (5 points) R 1 = 1.00 Ω, R 2 = 2.00 Ω, etc.

13. Answer: 4.68 Ω