Electric Field

What happens when two positively charged objects are placed near each other?

• They attract each other.

• They repel each other

• They remain stationary.

• They move randomly.

According to Coulomb's Law, the electrostatic force between two charges is:

• Directly proportional to the square of the separation distance

• Inversely proportional to the product of the charges.

• Directly proportional to the product of the charges and inversely proportional to the square of the distance.

• Independent of the distance between them.

If the distance between two charges is doubled, the force between them:

• Doubles

• Four times greater

• Reduces to one-fourth

• Stays the same

The unit of electric field strength is:

• Tesla

• Newton per Coulomb

• Volt per meter

• Newton per Coulomb or Volt per meter

Which of the following statements about electric field lines is incorrect?

• They never intersect.

• They always originate from a positive charge and terminate at a negative charge.

• The density of field lines represents the strength of the field.

• They form closed loops.

If the magnitude of a charge is doubled while keeping the distance constant, the electric field strength:

• Becomes half

• Becomes double

• Becomes one-fourth

• Remains the same