Electrostatics

JEE Main level, single correct, medium

61 of 311

Question 61 of 311

Electric charge is transferred to an irregular metallic disk as shown in figure. If σ1,σ2,σ3\sigma_1, \sigma_2, \sigma_3 and σ4\sigma_4 are charge densities at given points then, choose the correct answer from the options given below:

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Answer: (A) A, B and C Only

σ∝1ROC(ROC)1<(ROC)3<(ROC)2=(ROC)4σ1>σ3>σ2=σ4\begin{aligned} & \sigma \propto \frac{1}{\mathrm{ROC}} \\ & (\mathrm{ROC})_1 \lt (\mathrm{ROC})_3 \lt (\mathrm{ROC})_2=(\mathrm{ROC})_4 \\ & \sigma_1 \gt \sigma_3 \gt \sigma_2=\sigma_4\end{aligned}

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