Department of Pre-University Education, Karnataka course PUC Karnataka Science Class 12
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Following Figure (A) Shows an Imaginary Cube of Edge L/2. a Uniformly Charged Rod of Length (L) Moves Towards the Left at a Small but Constant Speed - Physics

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Question

Following Figure (a) shows an imaginary cube of edge L/2. A uniformly charged rod of length (L) moves towards the left at a small but constant speed `nu.` At t = 0, the left end just touches the centre of the face of the cube opposite it. Which of the graphs shown in the figure (b) represents the flux of the electric field through the cube as the rod goes through it?

  • a

  • b

  • c

  • d

Solution

(d)


At first, when the rod is inserted into the cube, the flux start increasing. When the rod is fully inserted, the flux becomes constant and remains constant for the remaining L/2 length of the rod. After that, as the rod moves out of the cube, the flux starts decreasing. These processes are depicted only by curve (d).

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APPEARS IN

 HC Verma Solution for Concepts of Physics - Vol. 2 (2018 to Current)
Chapter 8: Gauss’s Law
MCQ | Q: 6 | Page no. 140

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Solution Following Figure (A) Shows an Imaginary Cube of Edge L/2. a Uniformly Charged Rod of Length (L) Moves Towards the Left at a Small but Constant Speed Concept: Electric Flux.
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