Solved papers for JEE Main & Advanced JEE Main Paper (Held on 7 May 2012)

done JEE Main Paper (Held on 7 May 2012) Total Questions - 2

• question_answer1) Two circuits (a) and (b) have charged capacitors of capacitance C, 2C and 3C with open switches. Charges on each of the capacitor are as shown in the figures. On closing the switches   JEE Main Online Paper (Held On 07 May 2012)
  A)
  No charge flows in (a) but charge flows from R to L in (b)
  done clear
  B)
                         Charges flow from L to R in both (a) and (b)
  done clear
  C)
                         Charges flow from R to L in (a) and from L to R in(b)
  done clear
  D)
                         No charge flows in (a) but charge flows from L to R in (b)
  done clear
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• question_answer2) The electric potential V(x) in a region around the origin is given by \[V(x)=4{{x}^{2}}\]volts. The electric charge enclosed in a cube of 1 m side with its centre at the origin is (in coulomb).   JEE Main Online Paper (Held On 07 May 2012)
  A)
  \[8{{\varepsilon }_{0}}\]                                              
  done clear
  B)
                         \[-4{{\varepsilon }_{0}}\]
  done clear
  C)
                         0             
  done clear
  D)
                         (d)\[-8{{\varepsilon }_{0}}\]
  done clear
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