Equivalent value of d.c. = I effective = Im/√2 .
Class 12 Physics Chapter 7 Alternating current Session 2024-2025.
An a.c. I = Im sin wt produces certain heat H in a resistor R over a time T = 2π/w . write the value of d.c. that would produce the same heat in the same resistor in the same time.
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For an AC current I = Im sin(ωt), the equivalent DC current that produces the same heat H in a resistor R over time T= 2π/ω is I effective = Im/√2.
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