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.Management Sciences
Category: Electrostatics
A capacitor stores 0.24 coulombs at 10 volts. Its capacitance is___________?
0
A. 0.024 F
B. 0.12 F
C. 0.6 F
D. 0.8 F
If an ohmmeter reading immediately goes practically to zero and stays there, capacitor is___________?
A. charged
B. short-circuited
C. lossy
D. satisfactory
Potential difference is the work done in moving unit positive charge form one point to another________________?
A. in the direction of electric intensity
B. against electric intensity
C. in any direction
D. in the direction of electric flux
The minimum charge on any object cannot be less than_______________?
A. 1.6 x 10-19C
B. 3.2 x 10-19C
C. 9.1 x 109C
D. no definite value exist
To prevent the generation of static charges on rubber or flat leather__________?
A. surface is moistened
B. conductive dressing is done
C. oil compound dressing is done
D. talcum powder is sprayed on the surface
If three 15 uF capacitors are connected in series, the net capacitance is
A. 5 uF
B. 30 uF
C. 45 uF
D. 50 uF
If a 6 uF capacitor is charged to 200 V, the charge in coulombs will be____________?
A. 800 uC
B. 900 uC
C. 1200 uC
D. 1600 uC
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
Which capacitor will be physically smaller for the same ratings ___________?
A. Ceramic capacitor
B. Paper capacitor
C. Both will be of equal size
D. None of the above
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