Extra Credit Challenge III

Chapter 18

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.

• 1st, 2nd, and 3rd 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.

#1 Find Req of circuit(1 point)

20.0 V

2.50 Ω 10.0 Ω

30.0 Ω

Answer:10.0 Ω

#2 Find current through battery(2 points)

60.0 V

50.0 Ω 30.0 Ω

15.0 Ω 40.0 Ω

Answer:1.00 A

#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 Ω 40.0 Ω

Answer:20.0 V

#4 Find current through 8.00 Ω resistor (4 points)

10.0 V

8.00 Ω 30.0 Ω

15.0 Ω

40.0 Ω

15.0 Ω

40.0 Ω

Answer:0.242 A

#5 Find equivalent resistance of the circuit (5 points)

R1 = 1.00 Ω, R2 = 2.00 Ω, etc.

Answer:4.68 Ω