GATE EE concept:electric-field PYQs & Answers

Questions 1–6 of 6. Imported answers require independent review unless marked reviewed.

A positive point charge with velocity

enters a region having electric field

and magnetic field

. Which one of the following statements is correct for the force on the charge as it enters the region?

Your answerChoose one option.

The force will be along the magnetic field but perpendicular to the electric field

The force will be along the electric field but perpendicular to the magnetic field

The force will be perpendicular to both electric and magnetic field

The magnetic field does not exert any force on the charge

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Which one of the following figures represents the radial electric field distribution

caused by a spherical cloud of electrons with a volume charge density,

for

(both

are positive and

is the radial distance) and

for

Diagram for Electrical Engineering question 25

Your answerChoose one option.

Fig. (i)

Fig. (ii)

Fig. (iii)

Fig. (iv)

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In the

coordinate system, three point charges

, and

are located in free space at

, and

, respectively. The value of

for the electric field to be zero at

is __________ (rounded off to 1 decimal place).

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In the figure, the electric field E and the magnetic field B point to x and z directions, respectively, and have constant magnitudes. A positive charge ‘q’ is released from rest at the origin. Which of the following statement(s) is/are true.

Diagram for Electrical Engineering question 43

Your answerSelect all correct options. You can choose more than one.

The charge will move in the direction of z with constant velocity.

The charge will always move on the y-z plane only.

The trajectory of the charge will be a circle.

The charge will progress in the direction of y.

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Consider a large parallel plate capacitor. The gap

between the two plates is filled entirely with a dielectric slab of relative permittivity 5. The plates are initially charged to a potential difference of

volts and then disconnected from the source. If the dielectric slab is pulled out completely, then the ratio of the new electric field

in the gap to the original electric field

is __________.

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The static electric field inside a dielectric medium with relative permittivity,

, expressed in cylindrical coordinate system is given by the following expression

where

are unit vectors along

and

directions, respectively. If the above expression represents a valid electrostatic field inside the medium, then the volume charge density associated with this field in terms of free space permittivity,

, in SI units is given by:

Your answerChoose one option.

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GATE EE concept:electric-field PYQs

How to practice concept:electric-field

Question 16

Question 25

Question 51

Question 43

Question 42

Question 33