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(A) Thin infinite uniformly charged planes produce a uniform electric field. Therefore,the electric field lines must be parallel straight lines,which

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(A) Thin infinite uniformly charged planes produce a uniform electric field. Therefore,the electric field lines must be parallel straight lines,which rules out options $B$ and $C$ as they show curved field lines.The electric field due to a positively charged sheet is directed away from it,and the field due to a negatively charged sheet is directed towards it. The magnitude of the electric field is given by $E = \frac{\sigma}{2\epsilon_0}$.Since $\left|\sigma_{+}\right| > \left|\sigma_{-}\right|$,the magnitude of the electric field produced by the positively charged sheet is greater than that produced by the negatively charged sheet. This implies that the density of field lines originating from the positive sheet is higher than the density of field lines terminating on the negative sheet. Option $A$ correctly depicts the field lines originating from the positive sheet and terminating on the negative sheet with the appropriate relative densities,making it the correct representation.

Two charged thin infinite plane sheets of uniform surface charge density $\sigma_{+}$ and $\sigma_{-}$ where $\left|\sigma_{+}\right|>\left|\sigma_{-}\right|$ intersect at a right angle. Which of the following best represents the electric field lines for this system?

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