Physics · 2021
JEE Main · 25 February 2021, Shift 1 · Q26
The electric field in a region is given by E =(3/5 E_0 i +4/5 E_0 j ) N/C. The ratio of flux of reported field through the rectangular surface of…
The electric field in a region is given by $\displaystyle \overrightarrow{\mathrm{E}}=\left(\frac{3}{5} \mathrm{E}_0 \hat{i}+\frac{4}{5} \mathrm{E}_0 \hat{j}\right) \frac{\mathrm{N}}{\mathrm{C}}$. The ratio of flux of reported field through the rectangular surface of area $\displaystyle 0.2 \mathrm{~m}^2$ (parallel to $\displaystyle y-z$ plane) to that of the surface of area $\displaystyle 0.3 \mathrm{~m}^2$ (parallel to $\displaystyle x-z$ plane) is a: b , where $\displaystyle \mathrm{a}=$ \_\_\_\_.
[Here $\displaystyle \hat{i}, \hat{j}$ and $\displaystyle \hat{k}$ are unit vectors along $\displaystyle x, y$ and $\displaystyle z$-axes respectively]
Official answer
1
More from Electrostatics
- The vehicles carrying inflammable fluids usually have metallic chains touching the ground:2024
- A point charge of +12 μ 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…2021
- An electron revolves around an infinite cylindrical wire having uniform linear charge density 2 × 10^-8 C m^-1 in circular path under the influence…2023
- Six point charges are kept 60^° apart from each other on the circumference of a circle of radius R as shown in figure. The net electric field at the…2026
- A particle of charge ' -q ' and mass ' m ' moves in a circle of radius ' r ' around an infinitely long line charge of linear charge density ' +λ '.…2024
- Given below are two statements: one is labelled as Assertion and the other is labelled as Reason (R). Assertion: Work done by electric field on…2024
- Ten charges are placed on the circumference of a circle of radius R with constant angular separation between successive charges. Alternate charges 1,…2020
- Consider two infinitely large plane parallel conducting plates as shown below. The plates are uniformly charged with a surface charge density +σ and…2025
JEE Main 2021 Physics question, with the answer from NTA’s final answer key. Where our answers come from.