please solve part C

Part A A 20-cm-long nichrome wire is connected across the terminals of a 1.5 V battery. What is the electric field inside the wire? Express your answer to two significant figures and include the appropriate units. E = 7.5 V Submit Previous Answers Correct Part B What is the current density inside the wire? Express your answer to two significant figures and include the appropriate units. J = 5.0x106 A m2 Submit Previous Answers Correct Part C If the current in the wire is 1.2 A . what is the wire's diameter? Express your answer to two significant figures and include the appropriate units. P Pearson