ÉîÒ¹ÑÇÖÞ¸£Àû¾Ã¾Ã

  1. UCC Home
  2. Electronic Journals, Books and Publications
  3. Understanding Physics
  4. Chapter 17 Electric fields in materials
  5. Chapter 17 problems
  6. Answers to Chapter 17 Problems

Answers to Chapter 17 Problems

 

17.8.1   (i)  Innermost sphere (outer surface) +A; middle sphere (inner surface) –A, (outer surface) +(A + B); outermost sphere (inner surface) –(A + B)), (outer surface) +(A + B + C)    (ii) \( A  \over {4 \pi \epsilon_1 r^2} \)   and  \( A+B  \over {4 \pi \epsilon_2 r^2} \)     (iii)  V12 = \( {A  \over {4 \pi \epsilon_1}} {b - a \over ab} \);   V23 = \( {A+B  \over {4 \pi \epsilon_2}}{c - b \over bc} \)

17.9.1   \(  { \epsilon_r} \)  = 3;    \(  \Delta E  \over E \)  = \( - {2 \over  3} \) 

17.9.2   2000 V;     5 ×10–4 J

17.9.3   the particle moves towards the upper plate;    0.11 s  

17.9.4   5.45 × 10–5 m

17.9.5   (a) 5.3 pF    (b) 27 pC;    17 μV

17.9.6   (i) 35 nC   (b) 0.87 μJ;    72 V

17.11.1  1.35 × 10–3&²Ô²ú²õ±è;C;    3 times

17.12.1  (i)  9.66 × 10–7 C s–1  (ii)  1.69 ×10–6 C   (iii)  3.27 × 10–6 W   (iv)  4.35 × 10–6 W

17.12.2  0.062 Hz

Understanding Physics

Contact us

Mansfield and O'Sullivan, Understanding Physics, 3rd ed., John Wiley & Sons, Chichester (2020),

Connect with us

Choose areas of the website to search
Top