Solved papers for JEE Main & Advanced JEE Main Paper (Held On 9 April 2014)

done JEE Main Paper (Held On 9 April 2014) Total Questions - 2

• question_answer1) The magnitude of the average electric field normally present in the atmosphere just above the surface of the Earth is about 150 N/C, directed inward towards the center of the Earth. This gives the total net surface charge carried by the Earth to be: [Given \[{{\varepsilon }_{o}}=8.85\times {{10}^{-12}}{{C}^{2}}/N-{{m}^{2}},{{R}_{E}}=6.37\times {{10}^{6}}m\]]   [JEE Main Online Paper ( Held On 09 Apirl  2014  )
  A)
  + 670 kC                              
  done clear
  B)
  - 670 kC
  done clear
  C)
  680 kC  
  done clear
  D)
  + 680 kC
  done clear
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• question_answer2) Three capacitors, each of \[3\mu F,\]are provided. These cannot be combined to provide the resultant capacitance of:   [JEE Main Online Paper ( Held On 09 Apirl  2014  )
  A)
  \[1\mu F\]                                         
  done clear
  B)
  \[2\mu F\]
  done clear
  C)
  \[4.5\mu F\]                      
  done clear
  D)
  \[6\mu F\]
  done clear
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