Two point charges repel with a force of 4.5 milli Newton . On doubling on of the charges and altering their separation by 5 cm, the force of repulsion is 1.6 milli Newton. What was their original separation *
1 point
20 cm
25 cm
40 cm
50 cm
Answer needed ASAP
Explanation:
F= Kq1q2/r^2
1.6= kq^2 /9
Since k= 9×10^9
1.6= 10^9xq^2
q= 4×10^-5 C
Hope it helps.
Answer:
20 cm
Explanation:
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