Consider a copper conductor wire AWG 16 (5.217 mm2, 3.283 Ω/km) 10 meters long carrying a current of 6A and calculate: - The current density and electric field inside the conductor. - The potential difference present at its ends. - The power dissipated in the conductor in the above situation.

Question 2. Residential building codes typically require the use of 12-gauge cop- per wire (diameter 0.205 cm) for wiring receptacles. Such circuits carry currents as large as 20.0 A. If a wire of smaller diameter (with a higher gauge number) carried that much current, the wire could rise to a high temperature and cause a fire. (a) Calculate the rate at which internal energy is produced in 1.00 m of 12-gauge copper wire carrying 20.0 A. (b) Repeat the calculation for a 12-gauge aluminum wire. (c) Explain whether a 12-gauge aluminum wire would be as safe as a copper wire.

You have a battery marked "6.00 V." When you draw a current of 0.387 Afrom it, the potential difference between its terminals is 5.25 V. What is the potential difference Δ? when you draw 0.583 A?

Residential building codes typically require the use of 12-gauge copper wire (diameter 0.205 cm) for wiring receptacles. Such circuits carry currents as large as 20.0 A. If a wire of smaller diameter (with a higher gauge number) carried that much current, the wire could rise to a high temperature and cause a fire. (Table of resistivities) (a) Calculate the rate at which internal energy is produced in 1.15 m of 12-gauge copper wire carrying 20.0 A. _______W (b) Repeat the calculation for a 12-gauge aluminum wire. _______W