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Two point charges of magnitude 1.0nC and...

Two point charges of magnitude 1.0nC and -3.0nC are respectively located at a distance of 2.0 cm and 4.0 cm from the origin on the positive x-axis. The total force exerted by these two charges on a charge of 5.0nC located at the origin is :

A

196`muN` towards -X axis

B

196`muN` towards +x axis

C

28`muN` towards -x axis

D

28`muN` towards +x axis

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