Electric Field Lines: Interactive Lab with Five Guided Challenges
By Micah's Learning Resources
What this is Electric Field Lines is an interactive lab for high school physical science and physics, grades 9-12. Students place point charges and observe how electric field lines, equipotential lines, electric field strength, potential, and force change. What's inside - Five charge presets: dipole, repelling pair, asymmetric pair, tri-pole, and quadrupole. - Five guided challenges with a prediction and checks on the field. - Four field-line rules, each with a Show on field example and an explanation. - Controls to add, move, resize, and remove charges. Charge magnitudes range from 0.5 to 3.0 nC, and the test charge ranges from -5 to +5 nC. - Optional displays for equipotentials, force on the test charge, numeric values, superposition components, and a particle path compared with a field line. - A live reference panel showing each charge's contribution and the net field and potential at the test charge. What students do Students build charge arrangements, drag the test charge, compare predictions with field behavior, and complete the guided challenges. They can investigate why potential can cancel while the field does not, why equal like charges have a null point, and why a negative test charge feels force opposite the field direction. What you download One self-contained interactive file that opens in a browser. No account, installation, or internet connection is needed.