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1) You need to prepare a 0.187 x 10^-3 m diameter tungsten wire with a resistance of 2530 ohm. How long must the wire be? The resistivity of tungsten is 5.62 * 10-8 ohm m

___________m

2) A current of 32.9 mA flows in a silver wire of diameter 4.01 mm. Find the electric field strength inside the wire. The conductivity of silver is 6.25 x 10^7 ohm^-1m^-1

______V/m

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