8/2/26, 10:19 AM Grade 11 Physical Science — Electromagnetism | CAPS 2026
⚡ Grade 11 Physical Science
Electromagnetism — Complete Class Notes, Exam Papers & Memos
CAPS 2026 Aligned | Distinction Standard Slow-Learner Friendly
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,8/2/26, 10:19 AM Grade 11 Physical Science — Electromagnetism | CAPS 2026
📋 Formula Sheet — Electricity & Magnetism
Electrostatics
F = k · Q₁Q₂ / r²
Coulomb's Law — Force between two point charges (N)
k = 9 × 10⁹ N·m²·C⁻² | Q = charge (C) | r = distance (m)
E = F / q
Electric field strength = Force per unit positive charge (N·C⁻¹ or V·m⁻¹)
E = k · Q / r²
Electric field due to a point charge
Electric Circuits
R = V / I
Ohm's Law — Resistance = Potential Difference / Current (Ω)
Rs = R₁ + R₂ + R₃ + ...
Total resistance in SERIES
1/Rp = 1/R₁ + 1/R₂ + 1/R₃ + ...
Total resistance in PARALLEL
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, 8/2/26, 10:19 AM Grade 11 Physical Science — Electromagnetism | CAPS 2026
P = W/Δt = VI = I²R = V²/R
Power (W) — Rate of energy transfer
W = VQ = VIΔt = I²RΔt = (V²/R)Δt
Electrical Energy (J) — also 1 kWh = 3.6 × 10⁶ J
Electromagnetism
Φ = BA cos θ
Magnetic Flux (Wb) — B = magnetic field (T), A = area (m²), θ = angle between B and normal to
A
ε = −N · (ΔΦ / Δt)
Faraday's Law — Induced emf (V) | N = number of turns
ε = −N · B · A · cos θ / Δt
When only B changes and θ = 0°
⚡ CONSTANTS TO MEMORISE
k (Coulomb's constant) = 9.0 × 10⁹ N·m²·C⁻²
c (speed of light) = 3.0 × 10⁸ m·s⁻¹
1 kWh = 3.6 × 10⁶ J
Charge on electron = −1.6 × 10⁻¹⁹ C
file:///C:/Users/Sisonke/Downloads/grade11_electromagnetism.html 3/30
⚡ Grade 11 Physical Science
Electromagnetism — Complete Class Notes, Exam Papers & Memos
CAPS 2026 Aligned | Distinction Standard Slow-Learner Friendly
file:///C:/Users/Sisonke/Downloads/grade11_electromagnetism.html 1/30
,8/2/26, 10:19 AM Grade 11 Physical Science — Electromagnetism | CAPS 2026
📋 Formula Sheet — Electricity & Magnetism
Electrostatics
F = k · Q₁Q₂ / r²
Coulomb's Law — Force between two point charges (N)
k = 9 × 10⁹ N·m²·C⁻² | Q = charge (C) | r = distance (m)
E = F / q
Electric field strength = Force per unit positive charge (N·C⁻¹ or V·m⁻¹)
E = k · Q / r²
Electric field due to a point charge
Electric Circuits
R = V / I
Ohm's Law — Resistance = Potential Difference / Current (Ω)
Rs = R₁ + R₂ + R₃ + ...
Total resistance in SERIES
1/Rp = 1/R₁ + 1/R₂ + 1/R₃ + ...
Total resistance in PARALLEL
file:///C:/Users/Sisonke/Downloads/grade11_electromagnetism.html 2/30
, 8/2/26, 10:19 AM Grade 11 Physical Science — Electromagnetism | CAPS 2026
P = W/Δt = VI = I²R = V²/R
Power (W) — Rate of energy transfer
W = VQ = VIΔt = I²RΔt = (V²/R)Δt
Electrical Energy (J) — also 1 kWh = 3.6 × 10⁶ J
Electromagnetism
Φ = BA cos θ
Magnetic Flux (Wb) — B = magnetic field (T), A = area (m²), θ = angle between B and normal to
A
ε = −N · (ΔΦ / Δt)
Faraday's Law — Induced emf (V) | N = number of turns
ε = −N · B · A · cos θ / Δt
When only B changes and θ = 0°
⚡ CONSTANTS TO MEMORISE
k (Coulomb's constant) = 9.0 × 10⁹ N·m²·C⁻²
c (speed of light) = 3.0 × 10⁸ m·s⁻¹
1 kWh = 3.6 × 10⁶ J
Charge on electron = −1.6 × 10⁻¹⁹ C
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