Test Index

CBSE Class 12 Physics 2023 Outside Delhi Set 3 Paper

© examsnet.com
Question : 6 of 13
Marks: +1, -0
The current is a device varies with time tt as I=6tI=6 t, where II is in mA\text{mA} and tt is in s\text{s}. The amount of charge that passes through the device during t=0t=0 s to t=t= 3  s3\;\text{s} is
Solution:     👈: Video Solution
  I  =  dOdt\;I\;=\;\frac{dO}{dt}
     Or,     dQ  =Idt\;\;\text{ Or, }\;\;dQ\;=I dt
   Or,     dQ=6tdt\;\text{ Or, }\;\;dQ=6t dt
   Or,     ∫dQ=∫036tdt\;\text{ Or, }\;\;\int dQ = \int\limits_{0}^{3} 6t dt
   Or,     Q  =6∫03tdt\;\text{ Or, }\;\;Q\;=6 \int\limits_{0}^{3} t dt
   Or,     Q  =6[  t22]03\;\text{ Or, }\;\;Q\;=6 \left[ \;\frac{t^2}{2} \right]_{0}^{3}
   Or,     Q  =27  mC\;\text{ Or, }\;\;Q\;=27\;\text{mC}
© examsnet.com
Go to Question:
Prev Question
Next Question