Answer:
Option C. 4.5×10¯² N
Explanation:
From the question given above, the following data were obtained:
Charge 1 (q₁) = +5×10¯⁶ C
Charge 2 (q₂) = –4×10¯⁶ C
Distance apart (r) = 2 m
Electrical constant (K) = 9×10⁹ Nm²/C²
Force (F) =?
The magnitude of the force can be obtained as follow:
F = Kq₁q₂ / r²
F = 9×10⁹ × 5×10¯⁶ × 4×10¯⁶ / 2²
F = 0.18 / 4
F = 0.045
F = 4.5×10¯² N
Thus, magnitude of the force is 4.5×10¯² N
