Physics: Electricity Exercises

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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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