A current of 5 A passes through a copper conductor (resistivity = 1.7 × 1 0 − 8 Ω m ) of radius of cross-section 5 mm . Find the mobility of the charges if their drift velocity is 1.1 × 1 0 − 3 ms − 1

Question

A current of 5 A passes through a copper conductor (resistivity = 1.7 × 1 0 − 8 Ω m ) of radius of cross-section 5 mm . Find the mobility of the charges if their drift velocity is 1.1 × 1 0 − 3 ms − 1 .

TestHub · Accepted Answer

Mobility μ = E V d ​ ​ ⇒ μ = E V d ​ ​ = V V d ​ l ​ = i R V d ​ l ​ = i ρl V d ​ A l ​ μ = 5 × 1.7 × 1 0 − 8 1.1 × 1 0 − 3 × π ( 5 × 1 0 − 3 ) 2 ​ = 1.0 m 2 V − 1 ( s ) − 1

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