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If the electric field at a point is zero, what can be said about the charges pro

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Question: If the electric field at a point is zero, what can be said about the charges producing it?

Options:

  1. There are no charges nearby
  2. The charges are equal and opposite
  3. The charges are all positive
  4. The charges are all negative

Correct Answer: The charges are equal and opposite

Solution: 

The electric field is zero when the vector sum of the electric fields due to all charges is zero, which occurs when there are equal and opposite charges.

If the electric field at a point is zero, what can be said about the charges pro

Practice Questions

Q1
If the electric field at a point is zero, what can be said about the charges producing it?
  1. There are no charges nearby
  2. The charges are equal and opposite
  3. The charges are all positive
  4. The charges are all negative

Questions & Step-by-Step Solutions

If the electric field at a point is zero, what can be said about the charges producing it?
  • Step 1: Understand that an electric field is created by charges.
  • Step 2: Know that each charge produces its own electric field.
  • Step 3: Realize that the total electric field at a point is the sum of all the electric fields from each charge.
  • Step 4: If the electric field at a point is zero, it means that the sum of all the electric fields from the charges is zero.
  • Step 5: This can happen when there are equal and opposite charges, meaning one positive charge and one negative charge are present.
  • Step 6: Therefore, if the electric field is zero, it indicates that the charges are balanced in such a way that their electric fields cancel each other out.
  • Electric Field and Charge Interaction – The electric field at a point is determined by the vector sum of the electric fields produced by individual charges. If the total electric field is zero, it indicates a balance of forces from the charges involved.
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