AP PH CH 16 Electric Force/Field
- 1. What are the units for Electric Potential?
A) Newton meters
B) Ohms
C) Watts
D) Volts
- 2. An electron is placed in an electric field. Which direction will it move?
A) In the direction opposite the field
B) It won't move
C) It will cha-cha real smooth
D) In the direction of the field
- 3. Potential difference is measured in
?
A) Volts
B) Ohms
C) Newton meters
D) Watts
- 4. What is the purpose of a lightning rod?
A) To repel lighting with negative charge
B) To drain charge slowly from clouds
C) To ground buildings so lightning will not be attracted to them
D) To attract lightning to a safely grounded rod
- 5. An 80.0 MicroFarad capacitor can charge to a difference of 0.0144 C between the plates to power a camera flash. What is the voltage across the capacitor when it is fully charged?
A) 1.15 V
B) 360 V
C) 2.30 V
D) 180V
- 6. Two charged particles are at distance r= 25mm. The charge on q1 is 1.2 MicroCoulomb's, and the charge on q2 is -3.6 MicroCoulomb's. What is the force between the particles?
A) 6.9x10-9
B) -6.9x10-9
C) -62 N
D) 62 N
- 7. Three charges are in a line as shown in the image. The distance between q2 and q1 is 0.20 m and between q1 and q3 is 0.15 m. If q2= - 4.0 , q1= + 3.0, and q3= - 7.0 MicroCoulombs, what is the force on q1 due to the other charges?
A) -11 N
B) 11N
C) -5.7 N
D) 5.7 N
- 8. Three charges are in a line as shown in the image. The distance between q2 and q1 is 0.2 m and btween q1 and q3 is 0 .15 m. If q2= - 4.0, q1= + 3.0, and q3= - 7.0 MicroCoulombs, what is the force on q2 due to the other charges?
A) 0.65 N
B) -4.75 N
C) -0.65 N
D) 4.75N
- 9. Two charged particles are at distance r= 0.20 m. The charge on q1 is + 40 MicroCoulomb's. If the force between them is + 180 N, what is the charge on q2?
A) -40 MicroCoulombs
B) -20 MicroCouombs
C) 40 MicroCoulombs
D) 20 MicroCoulombs
- 10. A particle has a charge of 17 MicroCoulombs and is moved a distance of 0.20 m by an electric field. If the work done on the particle is 8.2 x 10^ - 4 Nm, then what is the strength of the electric field?
A) 2.8 x 10-9 N/C
B) 9.6 N/C
C) over 9000 N/C
D) 240 N/C
- 11. A point charge of +12.0 nanoCoulombs is 1.0 meters to the left of an + 18.0 nanoCoulomb point charge. What is the strength of the electric field and which direction does it point?
A) 216 N/C towards the larger charge
B) 216 N/C towards the smaller charge
C) 1080 N/C towards the larger charge
D) 1080 N/C towards the smaller charge
- 12. Suppose a Van de Graff Generator has a positive charge and person holds their hand on the top dome and their hair stands up. What is the charge of the person's hair?
A) positive
B) neutral
C) negative
- 13. This is a material that electricity can pass through.
A) dielectric
B) conductor
C) insulator
- 14. The region around a charged object in which another charged object experiences a force.
A) gravitational field
B) magnetic field
C) electric field
D) field of dreams
- 15. This is a known charge that is intentionally placed within an electric field and is used to determine the direction of the field.
A) grounded charge
B) point charge
C) static charge
D) test charge
- 16. This is the charge of either one electron or one proton.
A) unit charge
B) elementary charge
C) basic charge
- 17. This is the unit for capacitance.
A) Ampere
B) Coulomb
C) Farad
D) Volt
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