ClickerCentral

Formative assessment questions for teaching physics

A2L Item 118

  • Description: Indicate the direction of the electric force on a charge.
  • Goal: Hone the vector nature of electric force.
  • Source: UMPERG-A2LEM2
  • Keywords: Electromagnetism, Forces

The question for students:

Item118_fig1.gif

Two charges, a negative charge Q, and a positive charge q, are positioned as shown in the diagram. What is the direction of the electrical force on q due to Q?

Item118_fig2.gif

Commentary for teachers:

Answer

(3) The force is attractive.