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Advanced Higher Physics

Learn about electrical field strength, defined as the force acting per unit positive charge. Explore examples and diagrams to grasp key concepts. Practice problems with Scholar demo for enhanced understanding.

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Advanced Higher Physics

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  1. Advanced Higher Physics Electrical Field

  2. Electrical Field Strength 1 • E = F/q (measured in NC-1) • Defined as ‘the force F acting per unit positive charge q placed at a point in the field’

  3. Electrical Field Strength 2 Examples – • Find the electric field strength, E, at a distance, r, of 1.5 m from a charge, Q, of 2.5 nC.

  4. Electrical Field Strength 3 2. The electric field strength, E, is 3.8 NC-1 at a distance, r, of 2.0 m. What is the size of the charge?

  5. Electric Field Diagrams 1 • We can draw the electric field in the region around a charge. • For point charges the fields are radial. • Arrows show the direction of force experience by a positive (+) charge. • Spacing of arrows relates to field strength.

  6. Electric Field Problems • Scholar Examples • Scholar Demo

  7. Electric Field Diagrams 2 • Fields between like charges • Fields between like charges

  8. Electric Field Diagrams 3 • Fields around charged plates

  9. Electric Field Diagrams 4 • Field between oppositely charged plates • This is a parallel or uniform field. • Field strength is equal at all points inside field

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