"The electric field E is defined as the electric force F per unit charge: E = F/q. The direction of the field is defined as the direction of the force exerted on a positive test charge."
"Electric field lines always begin on positive charges and end on negative charges. The number of lines drawn from a positive charge or ending on a negative charge is proportional to the magnitude of the charge."
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"The electric field E is defined as the electric force F per unit charge: E = F/q. The direction of the field is defined as the direction of the force exerted on a positive test charge."
"Electric field lines always begin on positive charges and end on negative charges. The number of lines drawn from a positive charge or ending on a negative charge is proportional to the magnitude of the charge."
What you'll learn
- Define the electric field and explain why it is a more useful concept than direct charge-to-charge force
- Calculate the electric field at a point due to a point charge using E = kq/r²
- Determine the direction of the electric field at a point for positive and negative source charges
- Draw and interpret electric field line diagrams for simple charge configurations
- Calculate the electric force on a charge placed in an electric field using F = qE
Prerequisites
Slides
Interactive presentations perfect for visual learners • Interactive presentation
Slide Video
Watch narrated slides play like a video lesson • Narrated slide playback
Task-sets
Learning resource • 1 task-sets