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CBSE Class 12-science Answered

cHARGES  OF 1uC , 2uC , -3uC  are  placed  at  the  corners  of  an  equilateral triangle of  side 4cm. What is the magnitude of  the  net  force  acting  on  charge -3uC ?
Asked by pardeepkumar2281 | 10 May, 2018, 11:25: PM
answered-by-expert Expert Answer
 
Let electric forces on -3 μC charge due to 1μC  and 2 μC charges are F1 and F2 respectively. The angle between the two forces is 60º.
 
Hence the magnatiude of resultant force FR is given by
Substitute F1 and F2 in the equation for FR and consider 1/(4πε0) = 9×109 , we get FR = 4.465 × 1013 N 
Answered by Thiyagarajan K | 11 May, 2018, 02:26: PM
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