MATHS Questions asked in TRB POLYTECHNIC LECTURER EXAM 2017

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Field theory questions asked in TRB 2017 EEE Paper

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      Answer:                         Electric flux density = Q ( charge contained by closed surface)                                                   Electric flux intensity= Q / рем0                    Answer: C                                                 force on Q inversely proportional to distance. So force wont vary linearly with    distance.     Net force on Q3 is not zero.                                            
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