Electromagnetic Field Theory MCQ Questions & Answers | ECE

A. Continuity equation

B. Maxwell's equation

C. Laplace equation

D. None of the above

A. minimum and minimum

B. maximum and maximum

C. minimum and maximum

D. maximum and minimum

A. \[\frac{{\mu _0^2{I^2}}}{{2\pi {r^2}}}\]

B. \[\frac{{6{\mu _0}I}}{{5\pi r}}\]

C. \[\frac{{{\mu _0}I}}{{6\pi r}}\]

D. \[\frac{{5{\mu _0}I}}{{6\pi r}}\]

A. $$\overline {\text{D}} = {\varepsilon _0}\overline {\text{E}} \times {\text{P}}$$

B. $$\overline {\text{D}} = {\varepsilon _0}\overline {\text{E}} - {\text{P}}$$

C. $$\overline {\text{D}} = {\varepsilon _0}\left( {\overline {\text{E}} \times {\text{P}}} \right)$$

D. $$\overline {\text{D}} = {\varepsilon _0}\overline {\text{E}} + {\text{P}}$$

A. electromotive force

B. magneto motive force

C. conductance

D. permittivity

A. $$\left( {2\vec a,\,0} \right)$$

B. $$\left( {\vec a,\,0} \right)$$

C. $$\left( {0,\,2\vec a} \right)$$

D. $$\left( {0,\,\vec a} \right)$$

A. a good conductor

B. a good dielectric

C. neither a good conductor, nor a good dielectric

D. a good magnetic material

A. 1, 0

B. 0, 0

C. 0, 1

D. ∞, 1

A. \[{\nabla ^2}V = \frac{1}{\rho }\frac{\partial }{{\partial \rho }}\left( {\frac{{\rho \partial V}}{{\partial \rho }}} \right) + \frac{1}{{{\rho ^2}}}\left( {\frac{{{\partial ^2}V}}{{\partial {\phi ^2}}}} \right) + \frac{{{\partial ^2}V}}{{\partial {z^2}}} = 0\]

B. \[{\nabla ^2}V = \frac{{{\partial ^2}V}}{{\partial {x^2}}} + \frac{{{\partial ^2}V}}{{\partial {y^2}}} + \frac{{{\partial ^2}V}}{{\partial {z^2}}}\]

C. \[{\nabla ^2}V = - \frac{\rho }{\varepsilon }\]

D. \[{\nabla ^2}V = \frac{1}{r}\frac{\partial }{{\partial r}}\left( {\frac{{{r^2}\partial V}}{{\partial r}}} \right) + \frac{1}{{{r^2}\sin \theta }}\frac{\partial }{{\partial \theta }}\left( {\sin \theta \frac{{\partial V}}{{\partial \theta }}} \right) + \frac{1}{{{r^2}{{\sin }^2}\theta }}\frac{{{\partial ^2}V}}{{\partial {\phi ^2}}} = 0\]

A. 4

B. 8

C. 25

D. 40