003 10.0 points A 0.47 V potential difference is maintained across a 1 i length of tungsten wire that has a cross-sectional area of 0.93 mm. What is the current in the wire? The resis- tivity of the tungsten is 5.6 x 10 8 0 . m . Answer in units of A. 004 (part 1 of 2) 10.0 points A potential difference of 94 V produces a current of 4 A in a certain resistor. What is its resistance? Answer in units of . 005 (part 2 of 2) 10.0 points What is the current when the potential differ- ence is 31 V ? Answer in units of A. 006 (part 1 of 2) 10.0 points Suppose that you want to install a heating coil that will convert electric energy to heat at a rate of 239 W for a current of 2.29 A. Determine the resistance of the coil. Answer in units of Q. 007 (part 2 of 2) 10.0 points The resistivity of the coil wire is6.6 x 10 -7 ( . m. and its diameter is 0:414 mm. Find its length. Answer in units of m