Question

No 2 dan 3 soal yang ada pada gambar

Answer 1

Verified answer

Nomor 3.
E = kq / r²
q = Er² / k
   = (1,2 N/C)(0,3 m)² / (9 × 10⁹ Nm²/C²)
   = 1,2 × 10⁻¹¹ C

Nomor 2
F = kq₁q₂ / r²
r = √(kq₁q₂ / F)
  = √[(9 × 10⁹ Nm²/C²)(15 C)(3 C) / (2,5 N)]
  = √(0,162 × 10¹² m²)
  = 9/50 √5 × 10⁻⁶ m
  = 9/50 √5 μm