Calculate the ratio of the resistance of 10.0 m of aluminum wire 2.2 mm in diameter, to 24.0 m of copper wire 1.8 mm in diameter.

Question

Question

science physics

Answer 1

Answer #1

Resistance of wire is given by

Where L is length of wire

d=diameter of wire

and

Resistivity of copper

p_cu=1.68*10^-8 ohm-m

Resistivity of aluminium

p_Al=2.65*10^-8 ohm-m

Therefore

Answer 2

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