flavio3324 28/10/2017 U = k.Q/dU1 = 9.10^9 . -2.10^-9 / 1U1 = -18 VU2 = 9.10^9 . -2.10^-9 / 2U2= -18/2U2= -9V-ele quer o ddp entre x1 e x2ΔU = -18 + 9ΔU = -9 v
flavio3324
U = k.Q/d
U1 = 9.10^9 . -2.10^-9 / 1
U1 = -18 V
U2 = 9.10^9 . -2.10^-9 / 2
U2= -18/2
U2= -9V
-ele quer o ddp entre x1 e x2
ΔU = -18 + 9
ΔU = -9 v