Question

To demonstrate the large size of the henry unit, a physics professor wants to wind an air-filled solenoid with self-inductance of 1.0 H on the outside of a 15 cm diameter plastic hollow tube using copper wire with a 0.89 mm diameter. The solenoid is to be tightly wound with each turn touching its neighbor (the wire has a thin insulating layer on its surface so the neighboring turns are not in electrical contact).

Part A

How long will the plastic tube need to be?

Part B

How many kilometers of copper wire will be required?

Part C

What will be the resistance of this solenoid?

Answer 1