Relationship Between Electrostatic Force - General Physics - Past Paper, Exams of Physics

This is the Past Paper of General Physics which includes Spring Constant, Amplitude of Oscillation, Net Gravitational Force, Common Circular Orbit, Magnitude of Net Force, Orbital Period, Determine Mass of Stars etc. Key important points are: Relationship Between Electrostatic Force, Coulomb's Law, Specific to Electric Flux, Physical Significance, Gauss's Law, Electric Potential Energy, Process of Charging Two Capacitors

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2012/2013

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St. Vincent College
PH 112: General Physics II
Exam 1
2/13/2002
The exam consists of 4 questions. There will be 50 minutes to complete the exam. Allowable resources
are the provided equation sheet(s) and your calculator. The questions may not be worth the same
number of points, read the entire exam before beginning work. Put your name on all pages.
Problem 1 25
Problem 2 35
Problem 3 20
Problem 4 20
Total 100
pf3
pf4
pf5

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St. Vincent College

PH 112: General Physics II

Exam 1

2/13/

The exam consists of 4 questions. There will be 50 minutes to complete the exam. Allowable resources

are the provided equation sheet(s) and your calculator. The questions may not be worth the same

number of points, read the entire exam before beginning work. Put your name on all pages.

Problem 1 25

Problem 2 35

Problem 3 20

Problem 4 20

Total 100

  1. (25 pts)

a) ( 5 pts) What is the relationship between electrostatic force (Coulomb’s Law) and the electric field?

b) (5 pts) Explain what is meant by flux. ( Hint: Your answer does not need to be specific to electric

flux.)

c) (5 pts) In English, describe the physical significance of the term on the left-hand side of Gauss’s Law,

d) (5 pts) What is the important difference between electric potential energy and electric potential?

e) (5 pts) Explain the process of charging two capacitors connected in series that leads to the conclusion

that the amount of charge on each capacitor is the same.

  1. (20 pts)

C1 C2 C

C4 C

C

a) (15 pts) If the circuit shown above is constructed with capacitors as listed below, what is the effective

capacitance of the entire circuit?

C1: 10 !F

C2: 20 !F

C3: 30 !F

C4: 30 !F

C5: 100! F

C6: 90 !F

b) (5 pts) If a 12 V automotive battery is connected to this circuit, determine the charge stored in the

group of capacitors.

  1. (20 pts) Given the configuration of charges shown below,

x=0 x=

y=

y=

1C

3C -2C

determine the electric potential at the fourth corner of the rectangle (the location of the cross).

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