{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

2009-10-Sem1-Exam

# 2009-10-Sem1-Exam - NATIONAL UNIVERSITY OF SINGAPORE PC1222...

This preview shows pages 1–4. Sign up to view the full content.

NATIONAL UNIVERSITY OF SINGAPORE PC1222 FUNDAMENTALS OF PHYSICS II (Semester I: AY 2009-10, 28 November 2009) Time Allowed: 2 Hours INSTRUCTIONS TO CANDIDATES 1. This examination paper contains FIVE short questions in Part I and FOUR long questions in Part II. It comprises EIGHT printed pages including the cover page. 2. Answer ALL the questions in Part I and any THREE questions in Part II. 3. Answers to the questions are to be written in the answer book(s) and only answer book(s) should be submitted at the end of the examination. 4. The total mark for Part I is 40 and that for Part II is 60. 5. This is a CLOSED book exam. You are allowed however to bring in ONE help sheet in double sides no larger than A4 in size.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Page 2 of 8 PART I This part of the examination paper contains FIVE (5) short-answer questions from page 2 to 4. Answer all questions on the answer book. Question 1: Electric Charge. Four pairs of conducting spheres, all with the same radius, are shown above, along with the net charge placed on them initially. The spheres in each pair are now brought into contact, allowing charge to transfer between them. Rank the pairs of spheres in order of INCREASING magnitude of the charge transferred . Explain. [8] Question 2: Magnetism. A particle with unknown mass and charge moves with constant speed v = 1 . 9 × 10 6 m / s as it passes undeflected through a pair of parallel plates as shown. The plates are separated by a distance d = 6 . 0 × 10 - 3 m and a constant potential difference Δ V is maintained between them. A uniform magnetic field of magnitude B = 0 . 20 T directed into the page exists both between the plates and in a region to the right of them as shown. After the particle passes into the region to the right of the plates where only the magnetic field exists, its trajectory is circular with radius r = 0 . 10 m . (a) Determine the magnitude of the potential difference Δ V between the plates. Which plate is at a higher potential? Justify your answer. [5] (b) Determine the ratio of the charge to the mass ( q/m ) of the particle. [3] PC1222 Fundamentals of Physics II Semester I, 2009/10
Page 3 of 8 Question 3: Magnetic Fields.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern