Bantu jawab no 2,3,4

2.
1/Rp = 1/R1 + 1/R2 + 1/R3 + 1/R4
1/Rp = 1/2 + 1/3 + 1/2 + 1/3
1/Rp = (3 + 2 + 3 + 2) / 6
1/Rp = 10/6
Rp = 6/10
Rp = 3/5
Rp = 0,6 Ω

3.
Q1 = 6 C
Q2 = 9 C
k = 9×10⁹ Nm²/C²
r = 2m

F = k Q1 Q2 / r²
F = 9×10⁹ . 6 . 9 / (2)²
F = 486×10⁹ / 4
F = 121,5×10⁹ N

4.
I = 15 A
Q = 30 C
t = ..... ?

I = Q / t ↔ t = Q / I

t = 30 / 15
t = 2 detik

5.
a. Rangkaian seri
Rs = R1 + R2
Rs = 8 Ohm

b. kuat arus, I ?
V = I . R
220 = I . 8
I = 220/8
I = 27,5 A