railway RRB JE (CBT I + CBT II) Mock Test 2024 Electromagnetic Theory Magnetostatics Application of Ampere's Circuit Law
Which of the following statement is correct?
1
In semiconductors, electron and holes move in an electric field and in the same direction
2
Electric field density is exactly equal to the sum of electric field intensity and polarization
3
Ampere’s circuital law states that the line integral of H̅ about any closed path is exactly equal to the direct current enclosed by the path
4
None of the above