Odpowiedź:
zad. 1
t = 0,1 s
Q = 40 C
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I = ?
Q = I*T
I = Q/t = 40C/0,1s = 400 A
I = 400 A
zad. 2
R = 1,5 Ω
U = 9 V
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I = ?
I = U/R = 9V/1,5Ω = 6 A
I = 6 A
zad. 3
P = 2100 W
U = 230 V
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I = ?
P = U*I
I = P/U = 2100W/230V = 9,13 A
I = 9,13 A
zad. 4
P = 200 W
t = 20 s
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W = ?
W = P*t = 200W * 20 s = 4 000 J = 4 kJ
W = 4 kJ