The electric potential inside a charged solid spherical conductor in equilibrium
A: is always zero.
B: is constant and equal to its value at the surface.
C: decreases from its value at the surface to a value of zero at the center.
D: increases from its value at the surface to a value at the center that is a multiple of the potential at the surface
A: is always zero.
B: is constant and equal to its value at the surface.
C: decreases from its value at the surface to a value of zero at the center.
D: increases from its value at the surface to a value at the center that is a multiple of the potential at the surface
举一反三
- On the surface of a perfect conductor, the normal component of the electric displacement vector is A: continuous with the normal component of the electric displacement vector inside the conductor B: uncertain C: equal to the surface density of free charge on the conductor surface. D: equal to zero
- 5.On the ideal conductor surface, the relationship between the electric field line and the conductor surface is ( ) A: Vertical B: Parallel C: is zero D: not sure
- On the ideal conductor surface, the relationship between the electric field lines and the conductor surface is A: the electric field lines is always pertendicular to the conductor surface. B: the electric field lines is always parallel to the conductor surface. C: there is no electri field lines exsited. D: unable to determine the relationship.
- If the value of the sum of squares for error, SSE, equals zero, then the coefficient of determination must equal zero.
- Which<br/>one is not correct about ventilation/ perfusion ratio? () A: the<br/>normal value is 0.84 in resting state B: its<br/>decreasing means the increasing of physiologic dead space C: its<br/>value reaches to 3 at apex of lung D: its<br/>value decreases at inferior part of lung because there is not<br/>sufficient gas exchange there E: when<br/>it undergoes embolism in pulmonary artery, its value decreases