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Physics
What happens to the force between magnetic poles when their pole strength and the distance between them are both doubled
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Q. What happens to the force between magnetic poles when their pole strength and the distance between them are both doubled
A
Force increases to two times the previous value
7%
B
No change
71%
C
Force decreases to half the previous value
14%
D
Force increases to four times the previous value
7%
Solution:
$F \propto \frac{m_{1} m_{2}}{r^{2}}$