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12.121 Magnetic Fields from Currents Worksheet

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Worksheet Overview & Skills Covered

Core academic competencies and curriculum alignment

This Physics Science worksheet provides structured practice on 12.121 Magnetic Fields from Currents. Students are guided through targeted exercises that build foundational understanding, computational accuracy, and critical thinking skills.

Magnetic Fields from Currents: Use right-hand rules to determine magnetic fields around straight wires, loops, and solenoids. Aligned to NGSS, CCSS Literacy and Mathematics, AP Physics, and selected state frameworks 12.121 - Magnetic Fields from Currents: 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 12.121 Magnetic Fields from Currents skill assessments:

Problem 1Difficulty: Mastery

A solenoid's axis is the y-axis. Viewed from the +y end, the current around that end appears clockwise. Which description is correct?

AThe internal field points +y, and the +y end is north.

BThe internal field points -y, and the +y end is north.

CThe internal field points -y, and the +y end is south.

DThe internal field circles around the y-axis, and the +y end has no pole.

Solution & Explanation:Clockwise current as viewed from the +y end makes the right thumb point away from that viewer, along -y. A field entering that end corresponds to a south pole.

Problem 2Difficulty: Mastery

A loop lies in the xy-plane with counterclockwise current as viewed from +z. A straight wire parallel to the x-axis passes above the loop center at y=+a and carries current +x. At the loop center, the loop and wire produce equal magnetic-field magnitudes. What is the net field?

A+z, out of the page.

BZero.

C-z, into the page.

D+x, along the straight wire.

Solution & Explanation:The counterclockwise loop contributes +z at the center. The +x straight wire is above the center, so the center is on the wire's -y side, where its field is -z. Equal opposite fields cancel.

Problem 3Difficulty: Mastery

Two perpendicular wires cross at the origin without touching. The x-axis wire carries current -x, and the y-axis wire carries current +y. Point P is at (a, a, 0), equally far from both wires. What is the net magnetic-field direction at P?

A+z, out of the page.

BZero.

C+x, to the right.

D-z, into the page.

Solution & Explanation:The -x wire with P on the +y side gives -z. The +y wire with P on the +x side also gives -z. Therefore the net field is into the page.

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Frequently Asked Questions

Common questions about printing, using, and solving this worksheet

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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 12.121 (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.).