Ohm's Law - Questions

The Ohm's Law Concept Builder is comprised of 36 questions. The questions are divided into 12 different question groups. Questions in the same group are rather similar to one another. The Concept Builder is coded to select at random a question from each group until a student is successful with that group of questions. Every question poses a situation in which there is an alteration in the voltage impressed across a circuit or in the resistance of the circuit or in both. Learners must use the I = ∆V/R equation to predict how such a change will affect the current.

There are three levels of difficulty by which the student can progress through the Concept Builder. Those three difficulty levels are differentiated as follows:
 
  • Apprentice Level: Groups 1-4. Includes a doubling or tripling of either the voltage or the resistance.
  • Masters Level: Groups 1-8.  One variable is varied at a time. Variations in voltage and resistance can include doubling, tripling, halving, and "one-thirding."
  • Wizard Level: Groups 1-12. Includes the first eight Question Groups plus four additional groups in which two variables are altered.

The questions from each group are shown below. Teachers are encouraged to view the questions in order to judge which level of difficulty is most appropriate for their classes. We recommend providing students two or more options. For instance, it would be profitable for a student to complete the Concept Builder at the Apprentice Level in order to gain some confidence and then to be challenged to complete the activity at the Masters Level.

The Physics Classroom grants teachers and other users the right to print these questions for private use. Users are also granted the right to copy the text and modify it for their own use. However, this document should not be uploaded to other servers for distribution to and/or display by others. The Physics Classroom website should remain the only website or server from which the document is distributed or displayed. We also provide a PDF that teachers can use under the same conditions. We have included a link to the PDF near the bottom of this page.

 

 
Ohm's Law: Voltage-Current-Resistance Relationship
 
 
Question Group 1
 
Question 1
The current in the wires of a circuit is 60.0 milliAmps. If the voltage impressed across the ends of the circuit were doubled (with no change in its resistance), then its new current would be _____ milliAmps.
 
Question 2
The current in the wires of a circuit is 120.0 milliAmps. If the voltage impressed across the ends of the circuit were doubled (with no change in its resistance), then its new current would be _____ milliAmps.
 
Question 3
The current in the wires of a circuit is 180.0 milliAmps. If the voltage impressed across the ends of the circuit were doubled (with no change in its resistance), then its new current would be _____ milliAmps.
 
 
 
 
Question Group 2
 
Question 4
The current in the wires of a circuit is 60.0 milliAmps. If the voltage impressed across the ends of the circuit were tripled (with no change in its resistance), then its new current would be _____ milliAmps.
 
Question 5
The current in the wires of a circuit is 120.0 milliAmps. If the voltage impressed across the ends of the circuit were tripled (with no change in its resistance), then its new current would be _____ milliAmps.
 
Question 6
The current in the wires of a circuit is 180.0 milliAmps. If the voltage impressed across the ends of the circuit were tripled (with no change in its resistance), then its new current would be _____ milliAmps.
 
 
 
 
Question Group 3
 
Question 7
The current in the wires of a circuit is 60.0 milliAmps. If the resistance of the circuit were doubled (with no change in voltage), then its new current would be _____ milliAmps.
 
Question 8
The current in the wires of a circuit is 120.0 milliAmps. If the resistance of the circuit were doubled (with no change in voltage), then its new current would be _____ milliAmps.
 
Question 9
The current in the wires of a circuit is 180.0 milliAmps. If the resistance of the circuit were doubled (with no change in voltage), then its new current would be _____ milliAmps.
 
 
 
 
Question Group 4
 
Question 10
The current in the wires of a circuit is 60.0 milliAmps. If the resistance of the circuit were tripled (with no change in voltage), then its new current would be _____ milliAmps.
 
Question 11
The current in the wires of a circuit is 120.0 milliAmps. If the resistance of the circuit were tripled (with no change in voltage), then its new current would be _____ milliAmps.
 
Question 12
The current in the wires of a circuit is 180.0 milliAmps. If the resistance of the circuit were tripled (with no change in voltage), then its new current would be _____ milliAmps.
 
 
 
 
Question Group 5
 
Question 13
The current in the wires of a circuit is 60.0 milliAmps. If the voltage impressed across the ends of the circuit were halved (i.e., one-half of the original voltage) (with no change in its resistance), then its new current would be _____ milliAmps.
 
Question 14
The current in the wires of a circuit is 120.0 milliAmps. If the voltage impressed across the ends of the circuit were halved (i.e., one-half of the original voltage) (with no change in its resistance), then its new current would be _____ milliAmps.
 
Question 15
The current in the wires of a circuit is 180.0 milliAmps. If the voltage impressed across the ends of the circuit were halved (i.e., one-half of the original voltage) (with no change in its resistance), then its new current would be _____ milliAmps.
 
 
 
 
Question Group 6
 
Question 16
The current in the wires of a circuit is 60.0 milliAmps. If the voltage impressed across the ends of the circuit were one-third of the original voltage (with no change in its resistance), then its new current would be _____ milliAmps.
 
Question 17
The current in the wires of a circuit is 120.0 milliAmps. If the voltage impressed across the ends of the circuit were one-third of the original voltage (with no change in its resistance), then its new current would be _____ milliAmps.
 
Question 18
The current in the wires of a circuit is 180.0 milliAmps. If the voltage impressed across the ends of the circuit were one-third of the original voltage (with no change in its resistance), then its new current would be _____ milliAmps.
 
 
 
 
Question Group 7
 
Question 19
The current in the wires of a circuit is 60.0 milliAmps. If the resistance of the circuit were halved (i.e., reduced to one-half the original value) (with no change in voltage), then its new current would be _____ milliAmps.
 
Question 20
The current in the wires of a circuit is 120.0 milliAmps. If the resistance of the circuit were halved (i.e., reduced to one-half the original value) (with no change in voltage), then its new current would be _____ milliAmps.
 
Question 21
The current in the wires of a circuit is 180.0 milliAmps. If the resistance of the circuit were halved (i.e., reduced to one-half the original value) (with no change in voltage), then its new current would be _____ milliAmps.
 
 
 
 
Question Group 8
 
Question 22
The current in the wires of a circuit is 60.0 milliAmps. If the resistance of the circuit were reduced to one-third the original value (with no change in voltage), then its new current would be _____ milliAmps.
 
Question 23
The current in the wires of a circuit is 120.0 milliAmps. If the resistance of the circuit were reduced to one-third the original value (with no change in voltage), then its new current would be _____ milliAmps.
 
Question 24
The current in the wires of a circuit is 180.0 milliAmps. If the resistance of the circuit were reduced to one-third the original value (with no change in voltage), then its new current would be _____ milliAmps.
 
 
 
 
Question Group 9
 
Question 25
The current in the wires of a circuit is 60.0 milliAmps. If the voltage impressed across the ends of the circuit were doubled and the resistance were tripled, then its new current would be _____ milliAmps.
 
Question 26
The current in the wires of a circuit is 120.0 milliAmps. If the voltage impressed across the ends of the circuit were doubled and the resistance were tripled, then its new current would be _____ milliAmps.
 
Question 27
The current in the wires of a circuit is 180.0 milliAmps. If the voltage impressed across the ends of the circuit were doubled and the resistance were tripled, then its new current would be _____ milliAmps.
 
 
 
 
Question Group 10
 
Question 28
The current in the wires of a circuit is 60.0 milliAmps. If the voltage impressed across the ends of the circuit were tripled and the resistance were doubled, then its new current would be _____ milliAmps.
 
Question 29
The current in the wires of a circuit is 120.0 milliAmps. If the voltage impressed across the ends of the circuit were tripled and the resistance were doubled, then its new current would be _____ milliAmps.
 
Question 30
The current in the wires of a circuit is 180.0 milliAmps. If the voltage impressed across the ends of the circuit were tripled and the resistance were doubled, then its new current would be _____ milliAmps.
 
 
 
 
Question Group 11
 
Question 31
The current in the wires of a circuit is 60.0 milliAmps. If the voltage impressed across the ends of the circuit were tripled and the resistance were halved, then its new current would be _____ milliAmps.
 
Question 32
The current in the wires of a circuit is 120.0 milliAmps. If the voltage impressed across the ends of the circuit were tripled and the resistance were halved, then its new current would be _____ milliAmps.
 
Question 33
The current in the wires of a circuit is 180.0 milliAmps. If the voltage impressed across the ends of the circuit were tripled and the resistance were halved, then its new current would be _____ milliAmps.
 
 
 
 
Question Group 12
 
Question 34
The current in the wires of a circuit is 60.0 milliAmps. If the voltage impressed across the ends of the circuit was doubled and the resistance was one-third the original value, then its new current would be _____ milliAmps.
 
Question 35
The current in the wires of a circuit is 120.0 milliAmps. If the voltage impressed across the ends of the circuit was doubled and the resistance was one-third the original value, then its new current would be _____ milliAmps.
 
Question 36
The current in the wires of a circuit is 180.0 milliAmps. If the voltage impressed across the ends of the circuit was doubled and the resistance was one-third the original value, then its new current would be _____ milliAmps.
 
 
 
 
 
 



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