Electromagnetic Induction & AC (JEE Advanced)
Key Concepts
• Faraday’s Law: induced emf = -dΦ/dt.
• Lenz’s Law: direction of induced current opposes cause.
• Alternating Current: I=I■sin(ωt).
Important Notes
• Self-induction and mutual induction.
• Power in AC: P=VIcosφ.
• Resonance in LCR circuit at ω=1/√LC.
Practice
• State and explain Lenz’s Law.
• Find rms value of current: I=10sin(100πt).
Key Concepts
• Faraday’s Law: induced emf = -dΦ/dt.
• Lenz’s Law: direction of induced current opposes cause.
• Alternating Current: I=I■sin(ωt).
Important Notes
• Self-induction and mutual induction.
• Power in AC: P=VIcosφ.
• Resonance in LCR circuit at ω=1/√LC.
Practice
• State and explain Lenz’s Law.
• Find rms value of current: I=10sin(100πt).
