The charge on each particles which are 1 m apart and feeling a repulsive force of 1 N is 1.05×10¯⁵ C
Assumption
Let the charge on each particles be q
How to determine the charge
- Final force (F) = 1 N
- Distance apart (r) = 1 m
- Electrical constant (K) = 9×10⁹ Nm²/C²
- Charge on 1st particle (q₁) = q =?
- Charge on 2nd particle (q₂) = q =?
The charge on each particle can be obtained by using the Coulomb's law equation as shown below:
F = Kq₁q₂ / r²
F = Kq² / r²
1 = (9×10⁹ × q²) / 1²
1 = 9×10⁹ × q²
Divide both side by 9×10⁹
q² = 1 / 9×10⁹
Take the square root of both side
q = √(1 / 9×10⁹)
q = 1.05×10¯⁵ C
Learn more about Coulomb's law:
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