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BARC EE : Electromagnetic Fields Quiz-1

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Question 1

If the magnitude of electrical field between parallel plate capacitor is reduced to half of the previous value, then stored energy will:

Question 2

If magnetic flux through each turn of the coil consisting of 1000 turns is, where t is in seconds, then the induced emf in coil at is

Question 3

Consider the following two points M(2, 5, –3) and N(–3, 1, 4) The distance from the origin to the mid-point of the line MN will be nearly

Question 4

The components of  along  is

Question 5

An electric dipole is being placed in an electric field intensity  .

If the moment of the dipole will be

. Find the energy of dipole.

Question 6

The concept of time varying electric field producing a magnetic field is given by

Question 7

If and, where is not a null vector then

Question 8

Two vectors V1 and V2 are orthogonal if their dot product is

Question 9

A co-axial conductor has 1C charge and the potential difference between inner and outer cylinder is 1 V. If the outer radius is 4 cm and inner radius is 2 cm. The length of the conductor is (er = 4)

Question 10

A semi-infinite conductor lying on z-axis in the  direction from origin to infinity. Find magnetic field intensity at a point (4, 3, 0) if the current in conductor is 10 A.
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Aug 3ESE & GATE EE