Free Printable WorksheetScienceGrade 12Science Curriculum12.115

12.115 Combination Circuits Worksheet

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Worksheet Overview & Skills Covered

Core academic competencies and curriculum alignment

This Physics Science worksheet provides structured practice on 12.115 Combination Circuits. Students are guided through targeted exercises that build foundational understanding, computational accuracy, and critical thinking skills.

Combination Circuits: Simplify circuit networks and select the correct current, voltage, resistance, or power relationship. Aligned to NGSS, CCSS Literacy and Mathematics, AP Physics, and selected state frameworks 12.115 - Combination Circuits: Corresponding standards/alignment: NGSS HS-PS2-4, HS-PS2-5, HS-PS3-2, HS-PS3-3, HS-PS3-5, HS-PS4-5; CCSS HSN-Q.A, HSA-CED.A, HSF-IF, HSG-MG; AP Physics 2 E&M units; AP Physics C: E&M enrichment; TX TEKS Physics §112.45(c) electricity and magnetism; FL SC.912.P.10, SC.912.P.12; VA PH.6; MA/CA/NY HS-PS2/HS-PS3/HS-PS4.

Whether you are an educator preparing classroom handouts, a tutor reinforcing weekly topics, or a parent supporting homeschool learning, this printable resource gives students the deliberate practice required to achieve subject fluency and master state standards.

Grade

Physics

Subject

Science

Domain

Science Curriculum

Formats

PDF & DOCX

Sample Practice Problems

Preview the types of problems and questions covered in this worksheet

Below are sample questions representative of the exercises included on this worksheet and related 12.115 Combination Circuits skill assessments:

Problem 1Difficulty: Mastery

A 12 V source must draw 1 A from a circuit made of a 2 ohm series resistor followed by a parallel pair of R and 2R. What value of R is needed?

A5 ohm

B10 ohm

C20 ohm

D15 ohm

Solution & Explanation:The target total resistance is 12/1 = 12 ohm, so the parallel pair must be 10 ohm. The equivalent of R in parallel with 2R is 2R/3. Setting 2R/3 = 10 gives R = 15 ohm.

Problem 2Difficulty: Mastery

A balanced bridge has four outer resistors of 8 ohm each and a 2 ohm bridge resistor connecting the midpoints. What is the equivalent resistance between the source terminals?

A2 ohm

B10 ohm

C8 ohm

D18 ohm

Solution & Explanation:Because the bridge is balanced, the midpoint potentials are equal and the 2 ohm bridge resistor carries no current. The source sees two 16 ohm series branches in parallel, which is 8 ohm.

Problem 3Difficulty: Mastery

A 72 V source feeds a 6 ohm series resistor and then a parallel section with three 18 ohm branches. One branch is a single 18 ohm resistor, one branch has 9 ohm plus 9 ohm, and one branch has 12 ohm plus 6 ohm. What current flows through the 12 ohm resistor?

A1 A

B2 A

C3 A

D6 A

Solution & Explanation:The three branches are each 18 ohm, so the parallel section is 6 ohm. Total resistance is 12 ohm and total current is 6 A. The parallel voltage is 36 V, so each 18 ohm branch carries 2 A, including the branch with the 12 ohm resistor.

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Frequently Asked Questions

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QWhat grade level and standards does this worksheet align with?

This worksheet is designed specifically for Physics Science students. It aligns with educational standard 12.115 (Corresponding standards/alignment: NGSS HS-PS2-4, HS-PS2-5, HS-PS3-2, HS-PS3-3, HS-PS3-5, HS-PS4-5; CCSS HSN-Q.A, HSA-CED.A, HSF-IF, HSG-MG; AP Physics 2 E&M units; AP Physics C: E&M enrichment; TX TEKS Physics §112.45(c) electricity and magnetism; FL SC.912.P.10, SC.912.P.12; VA PH.6; MA/CA/NY HS-PS2/HS-PS3/HS-PS4.).