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Electric current in a wire is time rate ...

Electric current in a wire is time rate of flow of charge. The charge in coulombs that passes through a wire after `t` seconds is given by the function `q(t)=t^(2)-2t^(2)+5t+2`. Determine the average current (in coulmbe per second) during the first two seconds.

A

`4A`

B

`5A`

C

`6A`

D

`12A`

Text Solution

Verified by Experts

The correct Answer is:
B
`q(0)-=2,q(2)=12`
`i_(a^(1***))=(Deltaq)/(Deltat)=(12-2)/(2)=(10)/(2)=5`
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