1. Suatu resistor hambatannya 5,0 ohm dengan tegangan 120volt. Brp kuat arusmya? 2. Suatu kawat pjng 4m, luas penampang 2 x 10^-7 m² , hambat jenisnya 5 × 10^7 ohm m. Dihubungkan dgn tegangan 15volt. Brp kuat arusnya?
Muazz
1. diket R= 5,0 ohm V=120 V ditanya I...??????? p=V²/R =120²/5,0 =14400/5,0 =2880 W P=I²×R 2880=I²×5,0 I²=2880/5,0 I²=576 I=√576 I=24 A
R= 5,0 ohm
V=120 V
ditanya I...???????
p=V²/R
=120²/5,0
=14400/5,0
=2880 W
P=I²×R
2880=I²×5,0
I²=2880/5,0
I²=576
I=√576
I=24 A