Class 023 - ElectricField Applications

Class 023 - ElectricField Applications - Uniform 4. Excess...

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Electric Field Applications What You Will Learn Today • How are field lines and vectors related? • How do electric fields behave in parallel plate capacitors? Preparation for next class • Read 21.1 – 21.3 • Make progress on Homework: Chapter 20b
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Reading Quiz 1. Which of the following is not true of an electric field A. It points towards a positive charge B. It points towards a negative charge C. It is a vector D. A single charge can have an electric field 2. Electric field lines are ______ where the field is stronger Longer B. Closer together C. Shorter D. Sparse 3. The electric field inside a parallel plate capacitor is Zero Always weak C. Always strong
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Unformatted text preview: Uniform 4. Excess charge in a conductor is: Uniformly distributed On the surface C. Constantly moving Always at rest Electric Field Lines The electric field at any point is tangent to the curve, in the direction of the arrow The magnitude is stronger when field lines are closer together Parallel Plate Capacitors Uniform electric field inside a parallel plate capacitor 2 12 4 1 10 85. 8 Nm C K- = permittivity constant Forces in Electric Fields Application: DNA fingerprinting Preparation for Next Class Read 21.1 21.3 Make progress on Homework: Chapter 20b...
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Class 023 - ElectricField Applications - Uniform 4. Excess...

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