# DAY 25 Electric Fields. What is an Electric Field? Who cares? Slide 20-34.

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DAY 25 Electric Fields

What is an Electric Field? Who cares? Slide 20-34

What is an Electric Field? Who cares? Slide 20-34

Constructing the Electric Field Slide 20-34

Constructing the Electric Field Slide 20-34

Constructing the Electric Field Slide 20-34

The Electric Field of a Point Charge Slide 20-35

The Electric Field model Slide 20-34

Superposition of Electric fields Slide 20-34

Determine the magnitude and the direction of the electric field at point A. Example Problem Slide 20-70

Dipole Electric Fields Slide 20-45 Field lines

Electric Field Lines Slide 20-50

Uniform Electric Fields Slide 20-45

Cathode ray tube Slide 20-55

Examples Slide 20-55 a.The CRT (cathode ray tube) needs the electrons to exit with speed 6E7 m/s. What electric field strength is necessary? b. A uniform electric field of 1.5E5 N/C is used to deflect the beam. What angle?

Conductors and Electric Fields Slide 20-55

Conductors and Electric Fields Slide 20-55 A positively charged (non-metallic) sphere is places over a metal plate with a net negative charge.

Conductors and Electric Fields Slide 20-55 A positively charged (non-metallic) sphere is places over a metal plate with a net negative charge.

Forces and Torques on Charges in Electric Fields Slide 20-56

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