Two charges of magnitude 4μC and −9μC are 0.5m apart. The electric intensity is zero at a distance x m from A and y m from B. x and y are respectively:
A
0.5m,1.0m
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B
1.0m,1.5m
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C
2.0m,1.5m
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D
1.5m,2.0m
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Solution
The correct option is B1.0m,1.5m Here, y=x+0.5
Electric field at point P due to charge at A =E1=kq1x2
Electric field at point P due to charge at B =E2=kq2(x+0.5)2