A. Electrostatics
B. Charges in motion
C. Capacitors
D. Electric fields
Related Mcqs:
- In a charged capacitor the energy resides in________________?
A. magnetic hield
B. electric field
C. nuclear field
D. gravitational field - Battery operated trucks are used in________________?
A. steel mills
B. power stations
C. narrow gauge traction
D. factories for material transportation - Heavy duty cranes are used in________________?
A. ore handling plants
B. steel plants
C. heavy engineering workshops
D. all of the above - If biasing is not done in an amplifier circuit, it results in________________?
A. Decrease in the base current
B. Unfaithful amplification
C. Excessive collector bias
D. None of the above - 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 - 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 - 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 - The number of electrons in one coulomb charge is equal to_______________?
A. 6.2 x 1018
B. 1.6 x 1019
C. 6.2 x 1021
D. 1.6 x 10-27 - If free space between the plates of a capacitor is replaced by a dielectric_____________?
A. The potential difference remains constant capacittance and energy stored increases
B. The potential difference remains constant capacittance decreases and energy increases
C. The potential difference decreases but both capacitance and energy increase
D. both potential difference and capacitance decrease but energy increases - The electric charge of 100 °C is 13cm apart from another charge 16.9°C electric force between them is_____________?
A. 9x107N
B. 900N
C. 9x105N
D. 9x106N
