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प्रश्न
Differentiate between inductive reactance, capacitive reactance and impedance of an ac circuit.
फरक स्पष्ट करा
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उत्तर
Inductive Reactance (XL): Opposition from an inductor, calculated as XL = 2πfL. It increases with frequency, causing the current to lag the voltage by 90°.
Capacitive reactance (XC): Opposition from a capacitor, calculated as XC = `1/(2 pi f C)`. It decreases with frequency, causing the current to lead the voltage by 90°.
Impedance (Z): The total resistance to current flow in an AC circuit, combining resistance and reactance, Z = `sqrt(R^2 + (X_L - X_C)^2)`.
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