PHYSICS 2020 Problem Set 1

Total - 24 marks due September 12, 2008

“One day, Sir, you may tax it.”Michael Faraday’s response to British Prime Minister Gladstone when asked, “What goodis electricity?”

1. Variation on Text Exercise 25.3, page 583 (2 mark)A point charge of +2.22 µC is 15 cm distant from a second point charge of −1.33 µC.Calculate of the magnitude of the force on each charge.

2. Text Exercise 25.6, page 583 (4 marks)

3. Variation on Text Exercise 25.8, page 584 (4 marks)Find the horizontal and vertical components of the resultant electric force on the chargein the upper left corner of the square in Fig. 25-20. Assume q = 1.5 µC and a = 10cm.

4. Text Exercise 25.16, page 584 (4 marks)

5. Text Exercise 25.20, page 584 (4 marks)

6. Variation on Text Exercise 25.29, page 585 (2 marks)Calculate the number of coulombs of positive charge there are in a glass containing400 cm3 of water.

7. Text Problem 25.2, page 585 (4 marks)