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Physics: Electricity Exercises

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DUE: Friday, September 6

 

Electricity Exercises

 

Work each problem on paper or Microsoft Word, along with a brief description of how you solved the problem.

 

Your work should include a step-by-step solution to the problem.

 

Please include any free body diagrams that help you explain your answers.

 

Question 1
Aluminum has a resistivity of 2.7*10-8 Ωm.  What would be the resistance of 100 m of aluminum wire with a cross-sectional area of 2*10-4 m2?

 

Question 2
A 10 ohm resistor and a 20 ohm resistor are connected in parallel.  What is the equivalent resistance of this setup?

 

Question 3
A 4 ohm resistor and 10 ohm resistor are connected in series.  If this circuit is connected to a 12 V battery, how much current will flow through the circuit?

 

Question 4
A 30 ohm resistor is connected to a 1.5 V battery.  How much power is dissipated by the resistor?

 

Question 5
Two point charges, each 6*10-5 C, are separated by 30 cm.  What is the electrostatic force produced by this arrangement?

 
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