AC. Resonance. Generator, transformer.

AC. Resonance. Generator, transformer

Grade 11, section 1 — final lesson. Lesson 2: Faraday induction, self-induction $L$ , and energy $W_m = LI^2/2$ . Alternating current (AC) periodically reverses direction; mains $\nu = 50$ Hz ( $T = 0.02$ s in Europe).

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