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3. What color code corresponds to a resistance of 234 x 105 + 10% with temperature coefficient of resistance equal to 25x 10-6/Co? 4. A copper wire has a resistance of 15 Q at a temperature of 14 C. After a current passes through the windings, the resistance rose to 22.5 Q. To what temperature was the wire heated? 5. A copper wire is 2.50m long and has a diameter of 2.5 mm. how much current will it draw when connected to a 3.0 V source?Diection: Write your answer on long sheet of band paper. ACTIVITY 2. Solve the following problems. Show your solution. 1. An electrician experience a mild shock when he accidentally touches a wire carrying 5.0 mA for approximateiy 1.0 5. how many electrons constitute the given current? 2. The current density in a copper wire of diameter 1.02 mm is 1.75 x 105 Aim. The number of free electrons per cubic meter of copper is 8.5x 1029. Find the (a) current in the wire and [b] magnitude of drift velocity of electrons in the wire