Electric Current in a Conductor Under an Electric Field

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Questions and Answers

What happens to the number of electrons travelling in any direction in a conductor?

  • They tend to accumulate on the other side
  • They are not influenced by the electric field
  • They tend to accumulate on one side
  • They remain equal in any direction (correct)

In the scenario described, when will there be a current in the conductor?

  • When there is no electric field applied
  • When the electrons are stationary
  • For a very short while when electrons move to neutralize the charges (correct)
  • When the positive charge on one disc is greater than the negative charge on the other disc

What results in the creation of an electric field in the conductor?

  • Presence of positive and negative charges on opposite discs (correct)
  • Difference in electron and proton numbers
  • Existence of neutral charges only
  • Movement of positive charges

How does a steady electric field differ from a temporary one in a conductor?

<p>A steady field results in a continuous current flow (C)</p> Signup and view all the answers

What can be employed to maintain a steady electric field in a conductor?

<p>Cells or batteries (B)</p> Signup and view all the answers

What is responsible for accelerating electrons in a conductor when an electric field is applied?

<p>The electric field applied (B)</p> Signup and view all the answers

What is the relationship described by Ohm's law?

<p>V is directly proportional to I (C)</p> Signup and view all the answers

What does the symbol W represent in the context of resistance?

<p>Resistance (B)</p> Signup and view all the answers

How does resistance R depend on the dimensions of a conductor?

<p>Positively on the length and cross-sectional area of the conductor (A)</p> Signup and view all the answers

If two identical slabs are placed side by side, how does the resistance change?

<p>Remains the same (C)</p> Signup and view all the answers

What was G.S. Ohm's contribution to electrical science in 1828?

<p>Discovered Ohm's Law (D)</p> Signup and view all the answers

What is the SI unit for resistance?

<p>Ohm (D)</p> Signup and view all the answers

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