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diketahui:
q1 = 5μC = 5x10⁻⁶ C
q2 = 8μC = 8x10⁻⁶ C
F= 9N
ditanyakan:
R = ?
Jawab :
F = k q1 q2 1/R²
9 = 9x10⁹ x 5x10⁻⁶ x 8x10⁻⁶ x 1/R²
R² = 4x10⁻²
R = √4x10⁻²
R = 0,2 m = 20 cm
10.)
diketahui :
qA = 4q1
qb = 2q2
R2 = 1/2 R
F1 = F
ditanyakan
F2 = ?
Jawab :
F2/F1 = (qA qB R1² ) / (q1 q2 R2²)
F2/F = (4q1 2q2 R²) / (q1 q2 (0,5R)²)
F2/F =8/0,25
F2/F = 32
F2 = 32 F
jadi besar gayanya menjadi 32 kali semula