proszę o pomoc PILNE!!!!!!!!! a)P=2000W U=10V J=? b)J=3A, R=oma u,p=? c)U=600V R=10omów J,P=? d)P=100W J=2ampery U,R=?

a) P = 2000 W U = 10 V P = U * I I = P / U I = 2000 W /10 V I = 200 A [ W ] = [ V*A] b) I = 3 A R = 10 Ω = 10 V/A R = U / I U = R * I U = 10 V/A * 3 A U = 30 V P = U * I P = 30 V * 3 A P = 90 W c) U = 600 V R = 10 Ω R = U / I I = U / R I = 600 V / 10 Ω I = 60 A P = U * I P = 600 V * 60 A P = 36000 Ω = 36 kΩ 1 kΩ = 1000 Ω d) P = 100 W I = 2 A P = U * I U = P / I U = 100 W /2 A U = 50 V R = U / I R = 50 V / 2 A R = 25 Ω