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A point charge of `100mu C` is placed at `3 hat j+4 hat j m`. Find the electric field intensity due to this chargaes at a point located at `9 hat j+12 hat j m`.A. `8000Vm^(-1)`B. `9000Vm^(-1)`C. `2250Vm^(-1)`D. `4500Vm^(-1)` |
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Answer» Correct Answer - B `vec(r )=(9-3) hat i+(12-4)hat j=6 hat(i)+8 hat(j)` or, `r=sqrt(6^(2)+8^(2))=10m` `E=(9xx10^(9)xx100xx10^(-6))/(10^(2))=9000Vm^(-1)`. |
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