Download as Word Document - Wisc

Ohm's Law (IADC1)
The learner will demonstrate the use of Ohm's Law to solve series DC circuit
values.
Author - Mark Miller
Question 1: What is the current in a series circuit if the circuit's total resistance is 10K
ohms and the applied voltage is 10 volts?
Answer 1: 1A
Answer 2: 10A
Answer 3: 0.1A
Answer 4: .001A
Correct Answer: .001A
Feedback: Ohm's Law states I = V/R. I = 10V / 10K ohm = 1mA or 0.001A
Question 2: What is the current in a series circuit if the circuit's total resistance is 5K ohms
and the applied voltage is 20 volts?
Answer 1: 0.4mA
Answer 2: 4mA
Answer 3: 4A
Answer 4: 40ma
Correct Answer: 4mA
Feedback: Ohm's Law states I = V/R. I = 20V / 5K ohm = 4mA or 0.004A
Question 3: What is the current in a series circuit if the circuit's total resistance is 4K ohms
and the applied voltage is 12 volts?
Answer 1: 3mA
Answer 2: 4A
Answer 3: 4mA
Answer 4: 3A
Correct Answer: 3mA
Feedback: Ohm's Law states = V/R. I = 12V / 4K ohm = 3mA or 0.003A
Question 4: What is the current in a series circuit if the circuit's total resistance is 6K ohms
and the applied voltage is 18 volts?
Answer 1: 3A
Answer 2: 3mA
Answer 3: 30ma
Answer 4: 4ma
Correct Answer: 3mA
Feedback: Ohm's Law states I = V/R. I = 18V/6K ohm = 3mA or 0.003A
Question 5: What is the total resistance of a series circuit if the circuit's total current is
2mA and the applied voltage is 18 volts?
Answer 1: 360 ohms
Answer 2: 9000 ohms
Answer 3: 900 ohms
Answer 4: 3600 ohms
Correct Answer: 9000 ohms
Feedback: Ohm's Law states R = V/I. R = 18V / 2mA = 9000 ohms or 9K ohms
Question 6: What is the total resistance of a series circuit if the circuit's total current is
4mA and the applied voltage is 10 volts?
Answer 1: 2.5K ohms
Answer 2: 250 ohms
Answer 3: 4000 ohms
Answer 4: 400 ohms
Correct Answer: 2.5K ohms
Feedback: Ohm's law states R = V/I. R = 10V / 4mA = 2500 ohms or 2.5K ohms
Question 7: What is the total resistance of a series circuit if the circuit's total current is
5mA and the applied voltage is 20 volts?
Answer 1: 4K ohms
Answer 2: 100 ohms
Answer 3: 1 ohms
Answer 4: 4 ohms
Correct Answer: 4K ohms
Feedback: Ohm's Law states R = V/I. R = 20V / 5mA = 4000 ohms or 4K ohms
Question 8: What is the total resistance of a series circuit if the circuit's total current is
10mA and the applied voltage is 50 volts?
Answer 1: 500 ohms
Answer 2: 50000 ohms
Answer 3: 5K ohms
Answer 4: 5 ohms
Correct Answer: 5K ohms
Feedback: Ohm's law states R = V/I. R = 50V / 10mA = 5000 ohms or 5K ohms
Question 9: What is the total applied voltage to a series circuit if the circuit's total current
is 10mA and the total resistance is 10K Ohms?
Answer 1: 1V
Answer 2: 1000V
Answer 3: 100V
Answer 4: 0V
Correct Answer: 100V
Feedback: Ohm's Law states V = I x R. V = 10K ohms x 10mA = 100 volts
Question 10: What is the total applied voltage to a series circuit if the circuit's total current
is 1mA and the total resistance is 20K ohms?
Answer 1: 200V
Answer 2: 2V
Answer 3: 20V
Answer 4: 0.2V
Correct Answer: 20V
Feedback: Ohm's Law states V=I x R. V = 20K ohms x 1mA = 20 volts
Question 11: What is the total applied voltage to a series circuit if the circuit's total current
is 2mA and the total resistance is 5K ohms?
Answer 1: 10V
Answer 2: 100V
Answer 3: 1V
Answer 4: 1000V
Correct Answer: 10V
Feedback: Ohm's Law states V=IxR. V = 5K ohms x 2mA = 10 volts
Question 12: What is the total applied voltage to a series circuit if the circuit's total current
is 0.5mA and the total resistance is 10K ohms?
Answer 1: 0.5V
Answer 2: 10V
Answer 3: 50V
Answer 4: 5V
Correct Answer: 5V
Feedback: Ohm's Law states that V=I*R. V = 10K ohms x 0.5mA = 5 volts
GAMMA+ by Fox Valley Technical College is licensed under a Creative Commons
Attribution 3.0 Unported License.
This workforce product was funded by a grant awarded by the U.S. Department of Labor’s
Employment and Training Administration. The product was created by the grantee and does not
necessarily reflect the official position of the U.S. Department of Labor. The U.S. Department of
Labor makes no guarantees, warranties, or assurances of any kind, express or implied, with
respect to such information, including, but not limited to, accuracy of information or its
completeness, timeliness, usefulness, adequacy, continued availability, or ownership. Auxiliary
aids and services are available upon request to individuals with disabilities. This equal
opportunity program is part of a grant from the U.S. Department of Labor equaling
$2,999,750.00.