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What is the electric potential due to a point charge at a distance r?

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Question: What is the electric potential due to a point charge at a distance r?

Options:

  1. k * q / r
  2. k * q / r^2
  3. k * q * r
  4. k * q * r^2

Correct Answer: k * q / r

Solution: 

The electric potential V due to a point charge q at a distance r is given by V = k * q / r.

What is the electric potential due to a point charge at a distance r?

Practice Questions

Q1
What is the electric potential due to a point charge at a distance r?
  1. k * q / r
  2. k * q / r^2
  3. k * q * r
  4. k * q * r^2

Questions & Step-by-Step Solutions

What is the electric potential due to a point charge at a distance r?
  • Step 1: Identify the point charge, which we will call 'q'.
  • Step 2: Determine the distance 'r' from the point charge where you want to find the electric potential.
  • Step 3: Use the formula for electric potential, which is V = k * q / r.
  • Step 4: Understand that 'k' is a constant called Coulomb's constant, approximately equal to 8.99 x 10^9 N m²/C².
  • Step 5: Plug in the values of 'q' and 'r' into the formula to calculate the electric potential 'V'.
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