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# A 62.5 m length of insulated copper wire is wound to form a solenoid of radius...

A 62.5 m length of insulated copper wire is wound to form a solenoid of radius 2.3 cm. The copper wire has a radius of 0.51mm. (Assume the resistivity of copper is  ρ = 1.7 ✕ 10−8 Ω · m.)

(a) What is the resistance of the wire?
Ω

(b) Treating each turn of the solenoid as a circle, how many turns can be made with the wire?
turns

(c) How long is the resulting solenoid?

m

(d) What is the self-inductance of the solenoid?

mH

(e) If the solenoid is attached to a battery with an emf of 6.0 V and internal resistance of 350 mΩ, compute the time constant of the circuit.

ms

(f) What is the maximum current attained?

A

(g) How long would it take to reach 99.9% of its maximum current?

ms

(h) What maximum energy is stored in the inductor?

mJ

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