1.W przewodniku w czasie 1 min przepływa ladunek 120C. Oblicz opór jesli piecie wynosi 200 volt
2. Oblicz opór jeśli napiecie = 120 volt a natezenie wynosi 60 amper
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zad.1.
t = 1 min = 60 s
q = 120 C= 120 A * s
U = 200 V
R = ?
R = U / I ale I = q / t
R = U / q/t
R = U * t /q
R = 200 V * 60 s /120 A * s
R = 100 V/A = 100 Ω
zad.2.
U = 120 V
I = 60 A
R = ?
R = U / I
R = 120 V / 60 A
R = 2 Ω
Zad1
t=1min=60s
q=120C
U=200V
I=q/t
I=120C/60s=2A
R=U/I
R=200V/2A=100Ω
Zad2
U=120V
I=60A
R=U/I
R=120V/60A=2Ω