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  • What happenes to the force between magnetic poles when their pole strength and the distance between them are doubledOption: 1 Force increases tw

What happenes to the force between magnetic poles when their pole strength and the distance between them are doubled

Option: 1

Force increases two times the previous value


Option: 2

No change


Option: 3

Force decreses to half the previous value


Option: 4

Force increase to four times the previous value


Answers (1)

best_answer

As we learn

Coulomb's law in magnetism -

F=K\frac{m_{1}m_{2}}{r_{2}} = \frac{\mu _{0}}{4\pi }\frac{m_{1}m_{2}}{r_{2}}

 

- wherein

In SI unit,  K = \frac{\mu _0}{4 Pi } = 10^{-7} wb / amp-m

In CGS unit,  K=1

 

F\alpha \frac{m1m2}{r2}

Posted by

Rishi

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