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∝Q1Q2\propto Q_1 Q_2∝Q1Q2; ∝1r2\propto \frac{1}{r^2}∝r21
F=14πε0Q1Q2r2F = \frac{1}{4\pi \varepsilon_0} \frac{Q_1 Q_2}{r^2}F=4πε01r2Q1Q2
Permittivity of free space
The two charges
Distance between centres of the charges
Can be approximated as a vacuum
Charge acts from the centre of the sphere
Repulsive
Attractive
1.24×10361.24 \times 10^{36}1.24×1036 times stronger
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