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Two point charges `+9e` and `+e` are kept `16 cm`. Apart from each other. Where should a third charge `q` be placed between them so that the system is in equlibrium state:A. 24 cm from +9eB. 12 cm from +9eC. 24 cm from +eD. 12 cm from +e |
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Answer» Correct Answer - B `(K(9e)q)/r^(2)=-(Keq)/((16-r)^(2))rArr 3/r=1/(16-r)rArr r=12 cm` |
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