Zusammenfassung der Ressource
INTEGRATION
- Determine the charge entering a terminal between t= 1s and t= 2s. If the current passing through the terminal is i= (3t^2 -t) A
- Take out all the information given
- Analyze which formula to be use
- i= dQ/dt
- i dt= dQ
- Q= ∫ i dt
- Q= ∫ (3t^2 -t)
- Q= [3t^3/3 - t^2/2]
- for upper limit (2); [ 3(2)^3 /3 - (2)^2/2 ]
- for lower limit (1); [ 3(1)^3 /3 - (1)^2/2 ]
- Q= 6 - 0.5
- Q= 5.5 C
- i= (3t^2 -t) A