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प्रश्न
The mutual inductance between two coils is 0.09 henry. If the current in the primary coil changes from 0 to 20 A in 0.006 s, the e.m.f. induced in the secondary coil at that instant is ____________.
विकल्प
120 V
200 V
180 V
300 V
MCQ
रिक्त स्थान भरें
उत्तर
The mutual inductance between two coils is 0.09 henry. If the current in the primary coil changes from 0 to 20 A in 0.006 s, the e.m.f. induced in the secondary coil at that instant is 300 V.
Explanation:
`"e"_"s" = "M"."dIp"/"dt"`
`= 0.09 (20/0.006)`
`=300 "V"`
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