GATE EE 2006 | Magnetostatics Question 19 | Electromagnetic Fields

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GATE EE 2006

MCQ (Single Correct Answer)

-0.3

Which of the following statements holds for the divergence of electric and magnetic flux densities?

Both are zero

These are zero for static densities but non zero for time varying densities

It is zero for the electric flux density

It is zero for the magnetic flux density

GATE EE 2004

MCQ (Single Correct Answer)

-0.3

The inductance of a long solenoid of length $$1000$$ $$mm$$ wound uniformly with $$3000$$ turns on a cylindrical paper tube of $$60$$ $$mm$$ diameter is

$$3.2\,\,\mu H$$

$$3.2\,\,mH$$

$$32.0\,\,mH$$

$$3.2\,\,H$$

GATE EE 2003

MCQ (Single Correct Answer)

-0.3

Two conductors are carrying forward and return current of $$ + {\rm I}$$ and $$ - {\rm I}$$ as shown in Fig.

The magnetic field intensity $$\overrightarrow H $$ at point $$P$$ is

$${{\rm I} \over {\pi d}}{\overrightarrow a _y}$$

$${{\rm I} \over {\pi d}}{\overrightarrow a _x}$$

$${{\rm I} \over {2\pi d}}{\overrightarrow a _y}$$

$${{\rm I} \over {2\pi d}}{\overrightarrow a _x}$$

GATE EE 2000

MCQ (Single Correct Answer)

-0.3

An electron with velocity $$'u'$$ is placed in an electric field, $$E$$ and magnetic field, $$B.$$ The force experienced by the electron is given by

$$ - eE$$

$$ - eu \times B$$

$$ - e\left( {u \times E + B} \right)$$

$$ - e\left( {E + u \times B} \right)$$

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