The current in a conductor is expressed as $I=3 t^2+4 t^3$, where $I$ is in Ampere and $t$ is in second. The amount of electric charge that flows through a section of the conductor during $t=1$ s to $t=2 \mathrm{~s}$ is_______ C.
  • A$22$
  • B$30$
  • C$35$
  • D$40$
JEE MAIN 2024, Diffcult
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