In a charged capacitor the energy resides in________________?
A. magnetic hield
B. electric field
C. nuclear field
D. gravitational field
A capacitor is a perfect insulator for______________?
A capacitor is a perfect insulator for______________?
A. direct current
B. alternating current
C. both for the direct and alternating current
D. none of above
A charge of 0.10C accelerated through a potential difference of 1000V acquires kinetic energy_______________?
A charge of 0.10C accelerated through a potential difference of 1000V acquires kinetic energy_______________?
A. 200J
B. 100J
C. 1000J
D. 100 eV
Electric intensity at infinite distance from the point charge is_____________?
Electric intensity at infinite distance from the point charge is_____________?
A. zero
B. infinite
C. positive
D. negative
In a non-uniform electric field a polar molecule will experience____________?
In a non-uniform electric field a polar molecule will experience____________?
A. Net torque
B. Net force
C. both series and parallel combinations
D. zero
Two oppositely charged balls A and B attract third conducting ball C when placed near them turn by turn. Then ball C must be______________?
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
B. electrically neutral
C. negatively charged
D. positively and negatively charged
capacitor is to have an energy content of 20J it must be placed across a potential difference of________________?
capacitor is to have an energy content of 20J it must be placed across a potential difference of________________?
A. 4 volts
B. 9 volts
C. 2 volts
D. 1 vol
A 25eV electron has a speed of______________?
A 25eV electron has a speed of______________?
A. 2 x 106m/sec
B. 3 x 106m/sec
C. 5 x 106m/sec
D. 4 x 106m/sec
Equipotential planes are_______________?
Equipotential planes are_______________?
A. parallel to one another
B. non parallel to one another
C. intersecting
D. circular
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_______________?
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_______________?
A. charge will flow from A to B
B. charge will flow from B to A
C. no flow of charge will occur
D. both a and b are possible