Question
Two point charges are located on the $x$ -axis: a charge of $+6.0 \mathrm{nC}$ at $x=0$ and an unknown charge $q$ at $x=$ $0.50 \mathrm{m} .$ No other charges are nearby. If the electric field is zero at the point $x=1.0 \mathrm{m},$ what is $q ?$
Step 1
0 \mathrm{m}$. The electric field $E$ at a point due to a point charge $q$ is given by Coulomb's law: \[E = \frac{kq}{r^2}\] where $k$ is Coulomb's constant, $q$ is the charge, and $r$ is the distance from the charge to the point. Show more…
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Two electric charges, $q_{1}=+20.0 \mathrm{nC}$ and $q_{2}=+10.0 \mathrm{nC}$ are located on the $x$ -axis at $x=0 \mathrm{m}$ and $x=1.00 \mathrm{m}$ respectively. What is the magnitude of the electric field at the point $x=0.50 \mathrm{m}, y=0.50 \mathrm{m} ?$
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