Additional ME for STEM

If two charged particles are closer to each other, the electric force between them will:

• Increase

• Decrease

• Zero

• Does not change

What is the direction of the electric field produced by a positive point charge?

• Radially inward toward the charge

• Radially outward from the charge

• Circular around the charge

• Radially inward and outward

Two charges, +Q and –Q, are placed near each other. The electric field at the midpoint between them points:

• Toward +Q

• Toward -Q

• No direction

• Cancel each other direction

If both charges in Coulomb’s law are doubled, while the distance remains the same, the force:

• Doubles

• Quadruples

• Remains the same

• Half the original

Which statement about electric force is true?

• It is always attractive

• It depends on the charges but not on distance

• It does not follow an inverse-square law

• It can be either attractive or repulsive

Statement 1: The electric field is always directed away from a positive charge.
Statement 2: The electric field is always directed toward a positive charge.

• If statement 1 only is true

• If statement 2 only is true

• If both statements are true

• If both statements are false

Statement 1: When the distance between two charges increases, the electric force between them becomes stronger.

Statement 2: Electric force is always attractive between like charges.

• If statement 1 only is true

• If statement 2 only is true

• If both statements are True

• If both statements are False

Statement 1: Electric field lines never intersect each other.
Statement 2: Electric field lines are closer together where the field is stronger.

• If statement 1 only is true

• If statement 2 only is true

• If both statements are true

• If both statements are false

What is the net electric field and direction at the midpoint?

• 420,000 N/C to the right

• 108,000 N/C to the right

• 216,000 N/C to the left

• 216,000 N/C to the right

What is the net electric field and direction at the midpoint M?

• 250,000 N/C to the right

• 125,000 N/C to the left

• 200,000 N/C to the right

• 400,00 N/C to the left