전자기학
벡터해석
발산
2018.8 기출
전계 E의 성분이 Ex, Ey, Ez일 때 divE는?
- ① \(\dfrac{\partial E_x}{\partial x}+\dfrac{\partial E_y}{\partial y}+\dfrac{\partial E_z}{\partial z}\) 정답
- ② \(\dfrac{\partial E_x}{\partial y}+\dfrac{\partial E_y}{\partial z}+\dfrac{\partial E_z}{\partial x}\)
- ③ \(E_x+E_y+E_z\)
- ④ \(\nabla\times E\)
📖 해설
발산 \(\nabla\cdot E=\dfrac{\partial E_x}{\partial x}+\dfrac{\partial E_y}{\partial y}+\dfrac{\partial E_z}{\partial z}\) (스칼라).