If the distance between two stationary charged particle is doubled, the magnitude of the electro-static force between them will be

Assessment: JAMB UTME - Physics - 1985 Subject: Physics

Question 1 Report

doubled

halved

a quarter of its former value

unchanged

four times the original value

Answer Details

F $α$ $\frac{1}{d^{2}}$

F x d2 = constant

F1 x (d1)2 = F2 x (d2)2

d2 = 2d1

F1 x (d1)2 = F2 x (2d1)2

F2 = $\frac{1}{4}$ F1

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