# Physics: Electricity Exercises

**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} Î©m. What would be the resistance of 100 m of aluminum wire with a cross-sectional area of 2*10^{-4} m^{2}?

**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?