please I need help with these questions: (explanation as well)

1. A battery is used in an experiment and is connected by a 85.5 cm long gold wire with a diameter of 0.500 mm. If the battery has a voltage of 1.70 V and the resistivity of the wire is 2.410^-8 ? m, what is the current in the wire?

Current is?

2.

C2 C1 + 9 V C3\fa WW M R2WW R1 RZ + V RAR1 + V 1 WW + R2 2 WW + R 3 3R1 2 R3 3 + V R z