Q 1 :    

The electric current through a wire varies with time as $I=I_0+\beta t$ where $I_0=20A$ and $\beta =3A/s.$ The amount of electric charge crossed through a section of the wire in 20 sec is                           [2024]

• 80 C

   

• 1000 C

   

• 800 C

   

• 1600 C

   

Q 2 :    

The current in a conductor is expressed as $I=3t^2+4t^3$, where $I$ is in Ampere and $t$ is in second. The amount of electric charge that flows through a section of the conductor during $t=1s$ to $t=2s$ is _________ C.               [2024]