a. | Conservation of the current density vector. |
b. | Conservation of charge. |
c. | The fact that the momentum with which a charged particle approaches a junction is unchanged (as a vector) as the charged particle leaves the junction. |
d. | The fact that there is no accumulation of charges at a junction. |
Which of the above statements are correct?
1. (b) and (c)
2. (a) and (c)
3. (b) and (d)
4. (c) and (d)