12.5 Coulombs of charge flows through a 5 kilo-ohm resistor in 8 minutes. (a) What is the electric current that flows througt the resistor? (b) How muc power is consumed by the rsistor? A 15 m long copper wire has a cross- sectional radius of 3 mm. (a) What is the resistance of the wire ?(r= 1.68*10-8Ohm*m )
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