ection: Read, analyze and solve the following word problems. 1. An electrician wishes to cut a copper wire (p=1.724 x 10Qm) that has more than 100 resistance. The wire has a radius of 0.725 mm. Approximately what length of the wire has a resistance equal to the maximum 100? 2. At 20 C, the resistance of a silver wire is 300. (coefficient of temperature=0.0038). (a) If the wire is 1.2m-long. what is the radius of the wire? (b) What is the resistance of the same wire at 10 C? (c) What is the resistivity of the wire at 25.C? 3. A copper wire (p=1.724 x 10"(m) has a length of 30 m and a diameter of 2 mm. (a) If the power on the wire is 2 x 10 #W, what is the current flowing on the wire? (b) How much current is required? 4. A 2.5-ampere current flows through a silver wire with a radius of 23 mm. The wire is powered by a 220 V electromotive force. (a) What is the length of the wire? (b) What is the power dissipated by the wire