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fgiga [73]
3 years ago
5

Using the charts below, if you knew that a 1 mm diameter copper-nickel alloy wire can withstand a maximum load (before plastic d

eformation) of 78.54 N, and possesses an electrical resistance of 0.5 Ohms, then what is its length
Engineering
1 answer:
Masteriza [31]3 years ago
8 0

Answer:

L = 10.32 m

Explanation:

The resistance of a copper-nickel alloy wire is given by the following formula:

R = \frac{\rho L}{A}

where,

R = Resistance = 0.5 Ω

ρ = resistivity of copper-nickel alloy = 3.8 x 10⁻⁸ Ωm

L = Length of wire = ?

A = cross-sectional area of wire = \frac{\pi d^2}{4} = \frac{\pi(1\ x\ 10^{-3}\ m)^2}{4} = 7.85 x 10⁻⁷ m²

Therefore,

0.5\ \Omega = \frac{(3.8\ x\ 10^{-8}\ \Omega.m)L}{7.85\ x\ 10^{-7}\ m^2}

<u>L = 10.32 m</u>

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6 0
4 years ago
A zener diode exhibits a constant voltage of 5.6 V for currents greater than five times the knee current. IZK is specified to be
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