Electrical Engineering MCQs

Page No. 4

In a non-uniform electric field a polar molecule will experience____________?


aNet torque

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bNet force

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c both series and parallel combinations

✓


dzero

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Two oppositely charged balls A and B attract third conducting ball C when placed near them turn by turn. Then ball C must be______________?


a positively charged

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belectrically neutral

✓


cnegatively charged

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dpositively and negatively charged

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View Answer electrically neutral

capacitor is to have an energy content of 20J it must be placed across a potential difference of________________?


a 4 volts

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b9 volts

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c2 volts

✓


d 1 vol

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View Answer 2 volts

A 25eV electron has a speed of______________?


a 2 x 106m/sec

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b 3 x 106m/sec

✓


c 5 x 106m/sec

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d4 x 106m/sec

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View Answer 3 x 106m/sec

Equipotential planes are_______________?


aparallel to one another

✓


bnon parallel to one another

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cintersecting

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dcircular

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The metallic spheres A and B of radii 2m and 4m respectively carry the same charge 4 x 10 8C. If the spheres are connected by a copper wire_______________?


acharge will flow from A to B

✓


bcharge will flow from B to A

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cno flow of charge will occur

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dboth a and b are possible

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Two similar charges each of one coulomb placed in air one meter apart repel each other with a force______________?


a9 x 109N

✓


b9.2 x 104N

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c9 x 109N

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d9 x 107N

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View Answer 9 x 109N

A closed surface contains two equal and opposite charges. The net electric flux from the surface will be________________?


anegative

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bpositive

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c zero

✓


d data is insufficient

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View Answer zero

Electric intensity being a vector quantity always points_______________?


aalong the direction of force experienced by a unit positive charge

✓


bopposite to the direction of force experienced by a unit positive charge

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cperpendicular to the direction of force experienced by a uit positive charge

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dany of above

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An electric charge at rest produces_______________?


aonly a magnetic field

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bonly an electric field

✓


cneither electric field nor magnetic field

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dboth electric and magnetic fields

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