Electric Flux and Area Elements
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Questions and Answers

What happens to the electric flux through an area element when it is tilted by 90 degrees to the electric field?

  • The electric flux remains constant.
  • The electric flux becomes zero. (correct)
  • The electric flux is maximized.
  • The electric flux is minimized.
  • How is the electric flux ($ heta$) defined mathematically?

  • $ au = E imes rac{ ho}{A}$
  • $ au = rac{ ho}{eta}$
  • $eta = E heta imes rac{ ho}{A}$
  • $ ewline ext{ } ewline ext{ } ewline ext{ } ewline ext{ } ewline \Phi = ext{ } E ig| ext{A} ig| ext{ } ewline ext{ } ewline ext{ } ewline ext{ } ewline ext{ } ewline \cdot \ ig| ext{n} ig| ext{ } ewline ext{ } ewline ext{ } ewline ext{ } ewline ext{ } ewline ext{ } ewline e$ and.$ $ heta$ (correct)
  • What is the role of the angle $ heta$ in the electric flux equation?

  • It affects the distance between field lines.
  • It determines the orientation of the area element. (correct)
  • It is irrelevant to the calculation of electric flux.
  • It indicates the strength of the electric field.
  • Which statement about the area element vector $ ext{ΔS}$ is true for a closed surface?

    <p>It points outward from the surface.</p> Signup and view all the answers

    Why is it necessary to treat an area element as a vector?

    <p>To accurately represent the direction and magnitude.</p> Signup and view all the answers

    What factor affects the number of electric field lines crossing an area element?

    <p>The angle between the electric field and the area vector.</p> Signup and view all the answers

    In a stream, if a ring is held normal to the flow, what happens to the amount of water flowing through it?

    <p>It maximizes.</p> Signup and view all the answers

    What denotes the normal direction of a planar area element?

    <p>The outward direction of the surface.</p> Signup and view all the answers

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