Read the passage below and answer following questions The current through a wire depends on time as i=i0 + 3 αt2, where i0 = 10 A and α = 0.5 A/sec2. |
What is the charge passing through the wire for that interval t = 0 to t = 2s ? |
20 s 12 s 24 s 30 s |
24 s |
$Charge , dq = Idt = (I_0 + 3\alpha t^2)dt $ $\text{Integrating both sides,}$ $ q = I_0t+\alpha t^3 = 24C$ |