1

JEE Main 2021 (Online) 25th February Morning Shift

Numerical

+4

-1

The electric field in a region is given by $$\overrightarrow E = \left( {{3 \over 5}{E_0}\widehat i + {4 \over 5}{E_0}\widehat j} \right){N \over C}$$. The ratio of flux of reported field through the rectangular surface of area 0.2 m

^{2}(parallel to y $$-$$ z plane) to that of the surface of area 0.3 m^{2}(parallel to x $$-$$ z plane) is a : b, where a = __________ [Here $${\widehat i}$$, $${\widehat j}$$ and $${\widehat k}$$ are unit vectors along x, y and z-axes respectively.]Your input ____

2

JEE Main 2021 (Online) 25th February Morning Shift

Numerical

+4

-1

512 identical drops of mercury are charged to a potential of 2V each. The drops are joined to form a single drop. The potential of this drop is ________ V.

Your input ____

3

JEE Main 2021 (Online) 24th February Evening Shift

Numerical

+4

-1

A point charge of +12$$\mu$$C is at a distance 6 cm vertically above the centre of a square of side 12 cm as shown in figure. The magnitude of the electric flux through the square will be __________ $$\times$$ 10

^{3}Nm^{2}/C.Your input ____

4

JEE Main 2020 (Online) 9th January Evening Slot

Numerical

+4

-0

An electric field $$\overrightarrow E = 4x\widehat i - \left( {{y^2} + 1} \right)\widehat j$$ N/C

passes through the box shown in figure. The

flux of the electric field through surfaces ABCD

and BCGF are marked as $${\phi _I}$$ and $${\phi _{II}}$$

respectively. The difference between $$\left( {{\phi _I} - {\phi _{II}}} \right)$$ is (in Nm

passes through the box shown in figure. The

flux of the electric field through surfaces ABCD

and BCGF are marked as $${\phi _I}$$ and $${\phi _{II}}$$

respectively. The difference between $$\left( {{\phi _I} - {\phi _{II}}} \right)$$ is (in Nm

^{2}/C) _______.Your input ____

Questions Asked from Electrostatics (Numerical)

Number in Brackets after Paper Indicates No. of Questions

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