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CBSE Class 12-science Answered

100MH coil carries a current of 5 ampere what is energy store in it
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Asked by sahilposwal28 | 21 Aug, 2020, 02:20: PM
answered-by-expert Expert Answer
The energy stored in the magnetic field is given as, 
E space equals 1 half L I squared L space minus space i n d u c tan c e space I space minus space c u r r e n t space L space equals 100 space m H space equals space 0.1 space H space E space equals space 1 half open parentheses 0.1 close parentheses cross times open parentheses 5 close parentheses squared space equals space fraction numerator 2.5 over denominator 2 end fraction space equals 1.25 space J space  
 
Option (d) 1.25 J 
Answered by Shiwani Sawant | 21 Aug, 2020, 06:50: PM

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