1 to form a voltaic cell should the voltage be positive or

Question

1. To form a voltaic cell, should the voltage be positive or negative?

2. Which compartment in the Cu-Cu cell forms the anode to make a voltaic cell?

3. Show how you would calculate the theoretical voltage of the voltaic Cu-Cu cell in Part C, using standard reduction potentials and the measured temperature. (given that 0.005M/0.5M Cu²⁺ )

Should I use

E=E°-RT/nF logQ

E=E°-RT/nF ln[Cu²⁺]/[Cu²⁺]

to calculate theoretical Voltage of the voltaic Cu-Cu cell, but i am not sure about the n value