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Advanced Higher Physics

Advanced Higher Physics. Electrical Field. 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’. Electrical Field Strength 2. Examples –

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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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