Question

Błagam na teraz! ✩ Fizyka klasa 8 dwa zad w załaczniku , daje naj!!!!

Answer 1

zad. 1

t = 120 s

U = 230 V

I = 1 A

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W = ?

Q = I*t = 1A * 120s = 120 C

W = U*Q = 230V * 120C = 27 600 J = 27,6 kJ

W = 27,6 kJ

zad. 2

U = 12 V

I = 2 A

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P = ?

P = U*I = 12V * 2A = 24 W

P = 24 W