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If the electric field given by (5hat(i)+...

If the electric field given by `(5hat(i)+4hat(j)+9hat(k))`, then the electric flux through a surface of area 20 unit lying in the `yz`- plane will be

A

100 unit

B

80 unit

C

180 unit

D

20 unit

Text Solution

Verified by Experts

The correct Answer is:
A
Electric flux is equal to the product of an area element and the perpendicular component of E. As the surface is lying in Y-Z plane
`therefore" E.dA"=phi=(5)(20)="100 unit"`
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-ELECTROSTATICS-PRACTICE EXERCISE (Exercise 1 (TOPICAL PROBLEMS))
  1. The inward and outward electric flux for a closed surface unit of N-m^...

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  2. The electric charges are distributed in a small volume. The flux of th...

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  3. If the electric field given by (5hat(i)+4hat(j)+9hat(k)), then the ele...

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  4. Two capacitors having capacitances C(1) and C(2) are charged with 120 ...

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  5. A parallel plate capacitor is charged and then isolated. The effect of...

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  6. Conducting sphere of radius R(1) is covered by concentric sphere of ra...

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  7. The amount of work done in increasing the voltage across the plates of...

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  8. A parallel-plate capacitor is connected to a battery. A metal sheet of...

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  9. A parallel plate air capacitor consists of two circular plates of diam...

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  10. A parallel plate capacitor is made by stacking n equally spaced plates...

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  11. Figure below show regular hexagons with charges at the vertices. In w...

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  12. A parallel plate condenser has a unifrom electric field E (V//m) in th...

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  13. A parallel plate condenser is charged by connected it to a battery. Th...

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  14. A capacitor or capacitance C(1) is charge to a potential V and then c...

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  15. How many 1muF capacitors must be connected in parallel to store a char...

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  16. The 500 muF capacitor is charged at a steady rate of 100 mu C//s. The ...

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  17. A parallel plate air capacitor of capacitance C is connected to a cell...

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  18. The radii of the inner and outer spheres of a condenser are 9 cm and 1...

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  19. An unchanged capacitor with a solid dielectric is connected to a simil...

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  20. Two insulated metal spheres of raddi 10 cm and 15 cm charged to a pote...

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