| Q.39 | The divergence of the vector flux density A is the outflow of flux from a small _______ surface per unit volume as the volume ________________. | |
| Ans | 1. closed, expands to infinity | |
| 2. open, expands to infinity | ||
| 3. closed, shrinks to zero | ||
| 4. open, shrinks to zero |
Correct Ans: 3