A physics professor wants to demonstrate the large size of the henry unit. On th

Question

A physics professor wants to demonstrate the large size of the henry unit. On the outside of a 16-cm-diameter plastic hollow tube, she wants to wind an air-filled solenoid with self-inductance of 1.0 H using copper wire with a 0.77-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? Express your answer to two significant figures and include the appropriate units. l =
SubmitMy AnswersGive Up Part B How many kilometers of copper wire will be required? Express your answer using two significant figures. L =
km SubmitMy AnswersGive Up Part C What will be the resistance of this solenoid? Express your answer to two significant figures and include the appropriate units. R =
SubmitMy AnswersGive Up A physics professor wants to demonstrate the large size of the henry unit. On the outside of a 16-cm-diameter plastic hollow tube, she wants to wind an air-filled solenoid with self-inductance of 1.0 H using copper wire with a 0.77-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). A physics professor wants to demonstrate the large size of the henry unit. On the outside of a 16-cm-diameter plastic hollow tube, she wants to wind an air-filled solenoid with self-inductance of 1.0 H using copper wire with a 0.77-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). A physics professor wants to demonstrate the large size of the henry unit. On the outside of a 16-cm-diameter plastic hollow tube, she wants to wind an air-filled solenoid with self-inductance of 1.0 H using copper wire with a 0.77-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? Express your answer to two significant figures and include the appropriate units. l =
SubmitMy AnswersGive Up Part B How many kilometers of copper wire will be required? Express your answer using two significant figures. L =
km SubmitMy AnswersGive Up Part C What will be the resistance of this solenoid? Express your answer to two significant figures and include the appropriate units. R =
SubmitMy AnswersGive Up Part A How long will the plastic tube need to be? Express your answer to two significant figures and include the appropriate units. l =
SubmitMy AnswersGive Up Part B How many kilometers of copper wire will be required? Express your answer using two significant figures. L =
km SubmitMy AnswersGive Up Part C What will be the resistance of this solenoid? Express your answer to two significant figures and include the appropriate units. R =
SubmitMy AnswersGive Up Part A How long will the plastic tube need to be? Express your answer to two significant figures and include the appropriate units. l =
SubmitMy AnswersGive Up Part B How many kilometers of copper wire will be required? Express your answer using two significant figures. L =
km SubmitMy AnswersGive Up Part C What will be the resistance of this solenoid? Express your answer to two significant figures and include the appropriate units. R =
SubmitMy AnswersGive Up Part A How long will the plastic tube need to be? Express your answer to two significant figures and include the appropriate units. l =
SubmitMy AnswersGive Up Part A How long will the plastic tube need to be? Express your answer to two significant figures and include the appropriate units. l =
SubmitMy AnswersGive Up l =
l =
SubmitMy AnswersGive Up Part B How many kilometers of copper wire will be required? Express your answer using two significant figures. L =
km SubmitMy AnswersGive Up Part B How many kilometers of copper wire will be required? Express your answer using two significant figures. L =
km SubmitMy AnswersGive Up L =
km L =
km SubmitMy AnswersGive Up Part C What will be the resistance of this solenoid? Express your answer to two significant figures and include the appropriate units. R =
SubmitMy AnswersGive Up Part C What will be the resistance of this solenoid? Express your answer to two significant figures and include the appropriate units. R =
SubmitMy AnswersGive Up R =
R =
SubmitMy AnswersGive Up l =

Explanation / Answer

inductance = u N^2 A/L

if tightly wound, N = L/diameter

1 = 4*pi*10^(-7)*(L/0.77E-3)^2*pi*0.08^2/L
L=23 m

b) length of wire = 2 pi r N = 2*pi*0.08*(23/0.77E-3)= 15014 m = 15 km

c) R = rho L/A = 1.68E-8*15.0E3/(pi*(0.77E-3/2)^2)= 540 ohms

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