Solved papers for JEE Main & Advanced JEE Main Solved Paper-2015

done JEE Main Solved Paper-2015 Total Questions - 2

• question_answer1) An inductor (L = 0.03 H) and a resistor \[(R=0.15k\Omega )\]are connected in series to a battery of 15V EMF in a circuit shown below. The key \[{{K}_{1}}\] has been kept closed for a long time. Then at \[t=0,{{K}_{1}}\]is opened and key \[{{K}_{2}}\] is closed simultaneously. At t = 1ms, the current in the circuit will be : \[\left( {{e}^{5}}\cong 150 \right)\] [JEE Main Solved Paper-2015 ]
  A)
  6.7 mA                 
  done clear
  B)
  0.67 mA
  done clear
  C)
  100 mA                                
  done clear
  D)
  67 mA
  done clear
  View Answer play_arrow

• question_answer2) An LCR circuit is equivalent to a damped pendulum. In an LCR circuit the capacitor is charged to \[{{Q}_{0}}\]and then connected to the L and R as shown below : If a student plots graphs of the square of maximum charge \[\left( Q_{Max}^{2} \right)\]on the capacitor with time (t) for two different values \[{{L}_{1}}\] and \[{{L}_{2}}\] \[\left( {{L}_{1}}>{{L}_{2}} \right)\]of L then which of the following represents this graph correctly ? (plots are schematic and not drawn ot scale) [JEE Main Solved Paper-2015 ]
  A)
                                                 
  done clear
  B)
  
  done clear
  C)
                                                 
  done clear
  D)
  (d)
  done clear
  View Answer play_arrow