1. PHYS 221 Recitation Quiz
Kevin Ralphs
Week 4

2. Quiz Question
A wire has a diameter of 1.0 mm and a length of 30 m, and is found to have a resistance of 1.2 Ω. What is the resistivity of the wire?
31.4 nΩ∙m
126 nΩ∙m
115 MΩ∙m
45.8 MΩ∙m
Answer: a

3. Quiz Question
A 14.4-V battery for a cordless drill can supply 2.0 A of current. If the drill is continuously operated for 5 min, what is the total charge passing through the battery? What total amount of work does the battery do on the charge during these 5 min?
600 C; 8.64 kJ
10 C; 144 J
600C; 144 J
10 C; 8.64 kJ
Answer: a

4. Quiz Question
Answer: e

5. Quiz Question
Answer: c