Question

Dua muatan besarnya masing masing 2 mikro coulomb(uC) dan 4 mikro coulomb terpisah sejauh 2 cm. jika K = 9x10^9 tentukan besarnya gaya diantaranya

Answer 1

Diket :
q1= 2 micro coulomb = 2 x 10^-6 C
q2= 4 micro coulomb = 4 x 10^-6 C
r = 2cm = 2 x 10^-2 m

jawab :
F= k.q1.q2 / r^2
  = 9.10^9.2.10^-6.4.10^-6 / (2.10^-2)^2
  = 9.2.4.10^9.10^-6.10^-6 / 4.10^-4
  = 72.10^-3 / 4.10^-4
  = 18.10
  = 180 N