7) A 4.0 m length of gold wire is connected to a 1.5 V battery, and a current of 4.0 mA flows through it. What is the diameter of the wire? (The resistivity of gold is 2.44 × 10-8 Ω·m.) A) 17 µm B) 8.5 µm C) 48 µm D) 9.0 µm
R = rho*L/A
R = V/i
Equating both equations ,
1.5/4x10-3 = 2.44x10-8x4/pi*radius2
solving for radius , we get radius= 17 um
7) A 4.0 m length of gold wire is connected to a 1.5 V battery, and...
A 2.0m length of metal wire is connected to a 1.5 V battery, and a current of 5.0mA flows through it. What is the diameter of the wire? (The resistivity of metal is 2.24
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The terminals of a 0.70 V watch battery are connected by a 140-m-long gold wire with a diameter of 0.200 mm . What is the current in the wire? answer should be in mA
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A battery is used in an experiment and is connected by a 73.0 cm long gold wire with a diameter of 0.110 mm. If the battery has a voltage of 1.60 V and the resistivity of the wire is 2.4×10-8 Ω m, what is the current in the wire? Current in Amperes is (don't add units): It is not 1.7
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