Day 293: JEE Mains Physics

1. A.
   Electric displacement $(\overrightarrow{D})$ and surface charge density
2. B.
   Displacement current and electric field
3. C.
   Current density and surface charge density
4. D.
   Electric potential and energy

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1. A.
   2
2. B.
   1
3. C.
   3
4. D.
   0

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1. A.
   $\frac{n^{2}R}{n - 1}$
2. B.
   $\frac{(n - 1)R}{n}$
3. C.
   $\frac{(n - 1)R}{n^{2}}$
4. D.
   $\frac{(n - 1)R}{(2n - 1)}$

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