MHT CET 2021 Physics Solved Paper

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Question : 59 of 100
 
Marks: +1, -0
The mutual inductance between a primary and secondary circuit is 0.5H. The resistances of the primary and the secondary circuits are 20Ω and 5Ω, respectively. To generate a current of 0.4A in the secondary, current in the primary must be changed at the rate of
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