Electrical Engineering MCQs

Page No. 4

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


aNet torque


bNet force


c both series and parallel combinations


dzero



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


belectrically neutral


cnegatively charged


dpositively and negatively charged


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


b9 volts


c2 volts


d 1 vol


View Answer 2 volts

A 25eV electron has a speed of______________?


a 2 x 106m/sec


b 3 x 106m/sec


c 5 x 106m/sec


d4 x 106m/sec


View Answer 3 x 106m/sec

Equipotential planes are_______________?


aparallel to one another


bnon parallel to one another


cintersecting


dcircular



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


cno flow of charge will occur


dboth a and b are possible



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


c9 x 109N


d9 x 107N


View Answer 9 x 109N

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


anegative


bpositive


c zero


d data is insufficient


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


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


dany of above



An electric charge at rest produces_______________?


aonly a magnetic field


bonly an electric field


cneither electric field nor magnetic field


dboth electric and magnetic fields



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