A Tube of Mercury with Resistivity $9.84 \times 10 ^ { - 7 } \Omega \cdot \mathrm { m }$

question 9

Multiple Choice

A tube of mercury with resistivity $9.84 \times 10 ^ { - 7 } \Omega \cdot \mathrm { m }$ has a uniform electric field of $23 \mathrm {~N} / \mathrm { C }$ inside the mercury. How much current is flowing in the tube, if the radius of the tube is $0.495 \mathrm {~mm}$ ?

• A) \(280 \mathrm {~A}\)
• B) \(18 \mathrm {~A}\)
• C) \(29 \mathrm {~A}\)
• D) \(180 \mathrm {~A}\)

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