🔹 Chapter 1: Electric Charges and Fields
Coulomb’s Law:
Electric Field (E): Force per unit charge.
Electric Flux: Flow of electric field through a surface.
Gauss’s Law: Total electric flux =
💡 Concept:
Like charges repel, unlike attract. Field lines always start from + and end at – charges.
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🔹 Chapter 2: Current Electricity
Ohm’s Law:
Resistivity (ρ):
Series & Parallel combinations of resistors.
Kirchhoff’s Laws:
Junction rule: ΣI(in) = ΣI(out)
Loop rule: Σ potential drop = Σ potential rise
💡 Concept:
Current flows due to drift velocity of electrons.
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🔹 Chapter 3: Magnetic Effects of Current
Magnetic Field (B): Created by moving charges.
Biot-Savart Law, Ampere’s Circuital Law.
Coulomb’s Law:
Electric Field (E): Force per unit charge.
Electric Flux: Flow of electric field through a surface.
Gauss’s Law: Total electric flux =
💡 Concept:
Like charges repel, unlike attract. Field lines always start from + and end at – charges.
---
🔹 Chapter 2: Current Electricity
Ohm’s Law:
Resistivity (ρ):
Series & Parallel combinations of resistors.
Kirchhoff’s Laws:
Junction rule: ΣI(in) = ΣI(out)
Loop rule: Σ potential drop = Σ potential rise
💡 Concept:
Current flows due to drift velocity of electrons.
---
🔹 Chapter 3: Magnetic Effects of Current
Magnetic Field (B): Created by moving charges.
Biot-Savart Law, Ampere’s Circuital Law.
