Part A
Two charged particles are placed near the origin of an \( x y z \) coordinate system. Particle 1 carries charge \( +q \) and is on the \( x \) axis at \( x=+d \) Particle 2 caries an unknown charge and is at an unknown location. The magnitude of the electric field at the origin is \( q /\left(2 \pi c_{0} d^{2}\right) \), and the electrostatic potential at the origin, reiative to \( V=0 \) at infinity, is \( +7 q /(4 \pi e a d) \).
II particle 2 is on the \( x \) axis, what is its charge?
\( q z=12 q \)
\( \theta= \) Mig
\( q 2=10 q \)
\( q 2=8 q \)
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