Electric Fields
Presentation
•
Physics
•
10th - 12th Grade
•
Hard
James Gonzalez
FREE Resource
6 Slides • 8 Questions
1
2
•Electric fields…
•exist near CHARGED OBJECTS
•mapped using a POSITIVE test charge
•1 – place test charge
•2 – draw arrow in direction pushed
•3 – this is the field direction
3
4
Draw
Draw the electric field lines around the charges
5
6
Draw
Draw the electric field around the two charges
7
•Field strength…
• Gets WEAKER with distance
• FORCE exerted per unit CHARGE
8
Multiple Choice
•An object with a charge of -2 coulombs positioned in a uniform electric field experiences a force of -300 newtons. What is the strength of the electric field?
0.0067 C/N
0.0067 N/C
150 N/C
150 C/N
9
Multiple Choice
•What is the force experienced by a 0.05 coulomb charge when it is placed in an electric field with a strength of 3E3 newtons per coulomb?
0.017 N
0.15 N
150 N
60,000 N
10
•Field strength…
•Between plates
•E à Fe = SAME AT ALL POINTS
•Outside plates = ZERO
11
Draw
Hollow Charged Spheres. Follow the following instructions and your knowledge of electric fields to draw the field outside and inside the sphere. Normal field pattern outside, zero field inside
12
Multiple Choice
A bean of electrons passes through an electric field where the magnitude of the electric field strength is 3.00E3 N/C. What is the magnitude of the electrostatic force exerted by the electric field on each electron in the beam?
5.33E-23 N
4.80E-16 N
3.00E3 N
1.88E22 N
13
Multiple Choice
Which diagram represents the electric field between two oppositely charged conductive spheres?
1
2
3
4
14
Multiple Choice
An electric field exerts an electrostatic force of magnitude 1.5E-14 N on an electron within the field. What is the magnitude of the electric field strength at the location of the electron?
2.4E-33 N/C
1.1E-5 N/C
9.4E4 N/C
1.6E16 N/C
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