Free Printable WorksheetScienceGrade 12Science Curriculum12.123

12.123 Lenz's Law Worksheet

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Worksheet Overview & Skills Covered

Core academic competencies and curriculum alignment

This Physics Science worksheet provides structured practice on 12.123 Lenz's Law. Students are guided through targeted exercises that build foundational understanding, computational accuracy, and critical thinking skills.

Lenz's Law: Choose the induced-current direction that opposes the change in magnetic flux. Aligned to NGSS, CCSS Literacy and Mathematics, AP Physics, and selected state frameworks 12.123 - Lenz's Law: 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 12.123 Lenz's Law skill assessments:

Problem 1Difficulty: Mastery

A conducting loop is halfway into a finite region of into-page magnetic field and moving farther in. At the same time, the field strength is being reduced. A sensor shows the total into-page flux is still increasing. What is the induced current?

AClockwise, because the field strength is being reduced

BNo current, because motion and field change compete

CClockwise only after the loop is fully inside

DCounterclockwise, because the measured net flux change is increasing into the page

Solution & Explanation:When effects compete, use the net flux change. The sensor says into-page flux is increasing, so the loop opposes that increase with an out-of-page field and counterclockwise current.

Problem 2Difficulty: Mastery

A loop has a clockwise induced current at a marked instant. Which statement about the external magnetic flux is consistent with Lenz's law?

AThe into-page flux is increasing at that instant

BThe out-of-page flux is constant at that instant

CThe out-of-page flux is increasing at that instant

DThe magnetic flux is zero and staying zero at that instant

Solution & Explanation:Clockwise current creates an into-page induced field. That opposes a flux change toward out of the page, so increasing out-of-page flux is consistent.

Problem 3Difficulty: Mastery

A front-view loop has an induced current that is counterclockwise. Which external flux change could have produced it?

AThe out-of-page magnetic flux through the loop is increasing

BThe into-page magnetic flux through the loop is increasing

CThe into-page magnetic flux through the loop is constant

DThe out-of-page magnetic flux through the loop is constant and nonzero

Solution & Explanation:A counterclockwise induced current creates an out-of-page field. That field opposes an increasing into-page flux or a decreasing out-of-page flux; the listed change that fits is increasing into-page flux.

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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 12.123 (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.).