Week 4 (Recitation 3, Chapter 23-24)
Instructions:
1.
2.
3.
4.
5.
6.
7.
8.
Solve all questions.
Read each problem carefully and thoroughly before attempting to solve it.
Identify and underline key information provided in the problem statement.
Use appropriate formulas, equations, or concepts to solve the problem.
Clearly show all your work, including intermediate steps and calculations.
Provide units for all numerical answers.
Ensure that your handwriting is neat and legible.
If any clarification is needed regarding a problem, raise your hand, and ask for assistance.
(1)
Hint
𝑉=
𝐾𝑒 𝑄
.
𝑟
Target:
(a) 𝑉𝐴 = 5.43𝑘𝑉.
(b) 𝑉𝐵 = 6.08𝑘𝑉.
(c) 𝑉𝐵 − 𝑉𝐴 = 658𝑘𝑉
(2)
Target:
• 𝐹𝑟𝑜𝑚 𝑥 = 0𝑐𝑚 𝑡𝑜 𝑥 = 1𝑐𝑚, 𝐸𝑥 = −20𝑉/𝑐𝑚.
• 𝐹𝑟𝑜𝑚 𝑥 = 1𝑐𝑚 𝑡𝑜 𝑥 = 3𝑐𝑚, Ex = 0𝑉/𝑐𝑚
• 𝐹𝑟𝑜𝑚 𝑥 = 3𝑐𝑚 𝑡𝑜 𝑥 = 4𝑐𝑚, 𝐸𝑥 = 20𝑉/𝑐𝑚.
• 𝑁𝑜𝑤 𝑦𝑜𝑢 𝑐𝑎𝑛 𝑠𝑘𝑒𝑡𝑐ℎ 𝑡ℎ𝑒 𝑔𝑟𝑎𝑝ℎ.
(3)
If a rectangular area is rotated in a uniform electric field from the position where the maximum
electric flux goes through it to an orientation where only one sixth (1/6) the flux goes through
it, what has been the angle of rotation?
Target:
𝜃 =80.41°