Question

A wire 3.66 m long and 6.77 mm in diameter has a resistance of 21.7 m?. A potential difference of 17.5 V is applied between the ends. (a) What is the current in amperes in the wire? (b) What is the magnitude of the current density? (c) Calculate the resistivity of the material of which the wire is made.

(a)

Number

A wire 3.66 m long and 6.77 mm in diameter has a r

Units

A wire 3.66 m long and 6.77 mm in diameter has a r

(b)

Number

A wire 3.66 m long and 6.77 mm in diameter has a r

Units

A wire 3.66 m long and 6.77 mm in diameter has a r

(c)

Number

A wire 3.66 m long and 6.77 mm in diameter has a r

Units

A wire 3.66 m long and 6.77 mm in diameter has a r
1 0
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Answer #1

From Ohms law, the current is, 17.5 V =1806.5 A 10-3 Ω 21.7 mΩ Current density is defined as the current flowing through uni

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