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प्रश्न
Find the reactance of a coil of inductance 100 mH at a frequency of 50 Hz.
संख्यात्मक
उत्तर
Given: L = 100 mH = 100 x 10-3 H = 10-1 H
f = 50 Hz
XL = 2πfL
= `2xx3.14xx50xx10^(-1)`
= `6.28xx5`
XL = 31.4 Ω
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Electric Resonance
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