Assessment FOR Learning — Teacher Feedback (SPH3U)
📋 Not Graded — Descriptive Feedback Only
Purpose: Reviews Grade 9/10 prerequisite electricity/magnetism concepts and basic algebra needed for Unit 5.
Recall: \( V=IR \), simple algebra. Charge of one electron \( = -1.6\times 10^{-19} \) C.
Q1 — Charge concept prereq
List the three sub-atomic particles and their relative charges (sign and magnitude). Approximately how many electrons make up \(1\) C of charge?
Q2 — Conductor vs. insulator
Define conductor and insulator. Give two examples of each. Explain in 1–2 sentences why metals conduct electricity well.
Q3 — Circuit symbols
Sketch the standard symbols used in circuit diagrams for: battery (cell), resistor, switch, lamp, ammeter, voltmeter.
[Symbols]
Q4 — Series vs. parallel (concept)
Two identical lamps are connected (a) in series with a battery; (b) in parallel with the same battery. Which configuration produces brighter lamps and why?
Q5 — Algebra rearrangement prereq
Solve \( V = IR \) for (a) \( I \); (b) \( R \). Compute \( I \) when \( V=24 \) V and \( R=8 \) Ω.
Q6 — Magnets (concept)
State the rule about like and unlike magnetic poles. Sketch the magnetic field lines around a bar magnet. Are there magnetic monopoles in nature?
[Bar magnet field sketch]
Q7 — STSE
Why are GFCI (ground-fault circuit interrupter) outlets used in bathrooms and kitchens but not bedrooms? Briefly explain how they protect users.