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Answer on Electromagnetism Question for muhammad umar

Question #61338

5) A 0.40 mm diameter copper wire carries a current of
. Find the current density in the wire

a) 15.16A/m2

b) 33.32A/m2

c) 26.17A/m2

d) 23.87A/m2

6) Calculate the resistance of 180 m of silver wire having a cross section of
. The resistivity of silver is

a) 11.2Ω

b) 9.6Ω

c) 14.6Ω

d) 7.5Ω
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