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किसी परिपथ में 0.1 s 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 हाय है-
`I_(1)=5.0 A`
`I_(2)=0.0 A`
धारा में परिवर्तन `=dI=I_(2)-I_(1)=0.0 A -5.0 A`
`=-5A`
वह समय जिसमे धारा परिवर्तित होती है `=dt=0.1 s`
औसत प्रेरित विद्युत वाहक बल `= epsi=200V`
मान परिपथ का स्वप्रेरकत्व `=L =?`
हम जानते हैं -सूत्र `epsi=-L (d I)/(d t)`
मान, रखने पर,
`200=-L ((-5)/0.1)=50 L`
`:. L=200/50=4` हेनरी
या `L=4 H`.

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