(a) A student is experimenting with some insulated copper wire and a power supply. She winds a single layer of the wire

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(a)
A student is experimenting with some insulated copper wire and a
power supply. She winds a single layer of the wire on a tube with a
diameter of
dsolenoid = 10.0 cm.
The resulting solenoid is
ℓ = 75.0 cm
long, and the wire has a diameter of
dwire = 0.100 cm.
Assume the insulation is very thin, and adjacent turns of
the wire are in contact. What power (in W) must be delivered to the
solenoid if it is to produce a field of 8.40 mT at
its center? (The resistivity of copper
is 1.70 ✕ 10−8 Ω · m.)
W
What If? Assume the maximum current the
copper wire can safely carry is 24.0 A.
(b)
What is the maximum magnetic field (in T) in the solenoid?
(Enter the magnitude.)
T
(c)
What is the maximum power (in W) delivered to the solenoid?
W