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
Month: December 2018
A capacitor stores 0.24 coulombs at 10 volts. Its capacitance is_____________?
A capacitor stores 0.24 coulombs at 10 volts. Its capacitance is_____________?
A. 0.024 F
B. 0.12 F
C. 0.6 F
D. 0.8 F
The direction of electric field due +0 positive charge is ___________?
The direction of electric field due +0 positive charge is ___________?
A. away from the charge
B. towards the charge
C. both A. and (6)
D. none of the above
The electric field intensity at a point situated 4 meters from a point charge is 200 N/C. If the distance is reduced to 2 meters, the field intensity will be______________?
The electric field intensity at a point situated 4 meters from a point charge is 200 N/C. If the distance is reduced to 2 meters, the field intensity will be______________?
A. 400 N/C
B. 600 N/C
C. 800 N/C
D. 1200 N/C
The electric field at a point situated at a distance d from straight charged conductor is____________?
The electric field at a point situated at a distance d from straight charged conductor is____________?
A. proportional to d
B. inversely proportional to d
C. inversely proportional to d
D. none of the above
A field line and an equipotential surface are____________?
A field line and an equipotential surface are____________?
A. always parallel
B. always at 90°
C. inclined at any angle 0
D. none of the above
The force between two charges is 120 N. If the distance between the charges is doubled, the force will be________________?
The force between two charges is 120 N. If the distance between the charges is doubled, the force will be________________?
A. 60 N
B. 30 N
C. 40 N
D. 15 N
The ability of charged bodies to exert force on 6ne another is attributed to the existence of____________?
The ability of charged bodies to exert force on 6ne another is attributed to the existence of____________?
A. electrons
B. protons
C. neutrons
D. electric field
For making a capacitor, it is better to select a dielectric having___________?
For making a capacitor, it is better to select a dielectric having___________?
A. low permittivity
B. high permittivity
C. permittivity same as that of air
D. permittivity slightly more than that of air
In alkaline cell the electrolyte is_____________?
In alkaline cell the electrolyte is_____________?
A. dilute sulphuric acid
B. concentrated sulphuric acid
C. NaOH
D. KOH