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12.107 Coulomb'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 12.107 Coulomb's Law. Students are guided through targeted exercises that build foundational understanding, computational accuracy, and critical thinking skills.

Coulomb's Law: Compare electric forces for changes in charge magnitude, distance, sign, and direction. Aligned to NGSS, CCSS Literacy and Mathematics, AP Physics, and selected state frameworks 12.107 - Coulomb's Law: 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 12.107 Coulomb's Law skill assessments:

Problem 1Difficulty: Mastery

In a two-charge system, q1 is changed to -q1 while q2 is also changed to -q2. The positions and magnitudes stay the same. What happens to the force on q1?

AIts magnitude stays the same but its direction reverses.

BIts magnitude doubles and its direction stays the same.

CIts magnitude becomes zero because both charges are negative.

DIts magnitude and direction stay the same.

Solution & Explanation:Reversing both signs keeps the product sign pattern the same: like stays like or unlike stays unlike. With magnitudes and distance unchanged, both magnitude and direction on the corresponding left/right charge stay the same.

Problem 2Difficulty: Mastery

A +q test charge is placed at the origin. A -Q charge is at (0, -d), and a +4Q charge is at (2d, 0). What is the net force on the test charge if F = kQq/d²?

Asqrt(2)F directed up and right

B2F directed down and right

Csqrt(2)F directed down and left

DZero

Solution & Explanation:The -Q below attracts +q downward with F. The +4Q at 2d repels +q leftward with 4F/4 = F. Equal perpendicular forces produce sqrt(2)F down-left.

Problem 3Difficulty: Mastery

Trial A uses +2 microC and -3 microC separated by 0.30 m. Trial B uses +6 microC and -1 microC separated by 0.30 m. Which comparison is correct?

ATrial B has three times the force because +6 microC is larger than +2 microC.

BThe force magnitudes are equal because the charge products have equal absolute value.

CTrial A has three times the force because -3 microC is larger than -1 microC.

DThe forces are zero because each trial has opposite signs.

Solution & Explanation:Trial A has |(+2)(-3)| = 6 in microC-squared units, and Trial B has |(+6)(-1)| = 6. With equal distances, the magnitudes are equal.

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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 12.107 (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.).