q = 200 C
I = 10 kA = 10 000 A
U = 100 V
kwota za 1kWh - chyba ok. 50 gr
a) P = U*I = 100 V * 10 000 A = 1 000 000 W = 1000 kW = 1 MW
================
b) I = q/t /*t
It=q /:I
t = q/I = 200 C/10 000 A = 0,02 s
W = U*I*t = 100 V * 10 000 A *0,02 s = 2*10 000 J = 20 000 J
t = o,o2 s = 0,02* (1/3600 s)= 1/180000 h
c) W = U*I*t = 100 V * 10 000 A *1/180000 h = 1 000 kW *1/180000 h = 1/180 kWh=ok.
=ok. 0,006 kWh
koszt 50 gr * 0,006 kWh = 0,3 gr - coś małe te koszty ;0
====================
d) R = U/I = 100 V/ 10 000 A = 0,01 oma
Myślę, że pomogłam :-)
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q = 200 C
I = 10 kA = 10 000 A
U = 100 V
kwota za 1kWh - chyba ok. 50 gr
a) P = U*I = 100 V * 10 000 A = 1 000 000 W = 1000 kW = 1 MW
================
b) I = q/t /*t
It=q /:I
t = q/I = 200 C/10 000 A = 0,02 s
W = U*I*t = 100 V * 10 000 A *0,02 s = 2*10 000 J = 20 000 J
================
t = o,o2 s = 0,02* (1/3600 s)= 1/180000 h
c) W = U*I*t = 100 V * 10 000 A *1/180000 h = 1 000 kW *1/180000 h = 1/180 kWh=ok.
=ok. 0,006 kWh
koszt 50 gr * 0,006 kWh = 0,3 gr - coś małe te koszty ;0
====================
d) R = U/I = 100 V/ 10 000 A = 0,01 oma
Myślę, że pomogłam :-)