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किसी परिपथ में 0.1 सेकंड में धारा 5.0 A से 0.0 A तक गिरती है । यदि औसत प्रेरित विद्युत वाहक बल 200 V है , तो परिपथ में स्वप्रेरकत्व का आकलन कीजिए ।

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दिया है - `I _(1) = 5 A , I_(2) = 0 `
t = 0.1 सेकंड , `epsilon = 200 ` V
` epsilon = -L (dl)/(dt) = - L ((I_(2)-I_(1)))/t`
` :." " 200 = = -L ((0.5))/(0.1) = 50 L `
` :. L = 4 H `

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