Period: Date: Homework # 22 - Resistance Handout Problems: 1. Explain in terms of electron motion and collision why (a) longer wires have more resistance; (b) wires with greater cross sectional area [thicker] have less resistance and (c) heating a wire increases its resistance. What happens to the electrical energy furnished by a battery to move a current through a resistor? What is the resistance of a metal conductor throogh which a 6.0-V battery sends a Current of 0.20 A? A current of 0.40 A is owing in a nichronie wire of resistance 25 Q. What potential difference is being applied to the wire? A llO-V electric iron draws 3.0 A of current. How much electrical energy is supplied to it each hour? What is the resistance of a Tungsten wire of cross sectional area, 0.002 n12, length 10 In, at a temperature of 20C? [See reference table]