Electromagnetic Induction and Alternating Current
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Magnetic Flux
- flux linkage
- work done in changing the orientation of a current-carrying coil in a magnetic field
Faraday's Law
- law of electromagnetic induction
- direction of induced EMF
- induced charge
Lenz's Law
- direction of induced current
- conservation of energy
Motional EMF
- finding the direction of induced EMF
- special cases
- motional EMF as an equivalent battery
- motional EMF in a random-shaped wire
- EMF across a rotating straight conductor
- motional EMF in a non-uniform magnetic field
Induced Electric Field
- induced EMF in a stationary conductor
- non-conservative nature of the induced field
Self-Inductance
- direction of the self-induced EMF
- inductance of a solenoid
Mutual Inductance
- total flux linked to a pair of coils
- calculation of mutual inductance from self-inductances
Combination of Inductors
- series and parallel combinations
Inductor in Circuits
- analogy between self-induction and inertia
Growth and Decay of Current
- growth and decay of current in an LR circuit
Energy in an Inductor
- energy stored in the magnetic field of an inductor
LC Oscillations
- oscillations in an LC circuit
- oscillation of electrical and magnetic energy
AC Fundamentals
- mean or average value of current
- root mean square (RMS) value of current
Phasor Diagrams
- phasor representation of AC quantities
AC Circuits
- circuit containing resistor only
- inductor only with inductive reactance
- capacitor only with capacitive reactance
Series LCR Circuit
- AC circuit containing R L and C in series
- impedance and phase
Power in AC Circuits
- power in a series LCR circuit
- wattless component of current
- choke coil
Resonance
- resonance in a series LCR circuit
- Q-factor (quality factor) of resonance
Transformers
- principle and working
Skin Effect
- concept and significance
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