1 |
if time constant in RC series circuit is small, then capacitor is charged or discharged. |
Slowly
Rapidly
At constant rate
Intermittently
|
2 |
The quantity time constant RC has units of. |
Charge
Time
Capacitance
Resistance
|
3 |
The product of resistance and capacitanc eis. |
Velocity
Force
Acceleration
Time
|
4 |
If the potential difference across two plates of capacitor is doubled, then energy stored in it will be. |
Two times
Eight times
Four times
Remain same
|
5 |
When some di electric is inserted between the plates of a capacitor, then capacitance. |
Decreases
Increases
Becomes zero
Becomes infinity
|
6 |
The electric potential at a mid point in an electric dipole is. |
0 V
0.5 V
1 V
1.5 V
|
7 |
Due to polarization, electric field E. |
Increase
Decrease
First increases then decreases
Remain same
|
8 |
The capacitance of a capacitor depends upon. |
Thickness of plates
Charges on the plates
Voltage applied
Geometry of the capacitor
|
9 |
Presence of dielectric between two charges always. |
Reduces the electric force
Enhance the electric force
Does not effect electric force
Double the electric force
|
10 |
Capacitance of a capacitor does not depend upon. |
Distance between plates
Area of plates
Electric field between plates
Medium between plates
|
11 |
If the separation between the plates of a capacitor is doubled then its capacitance become. |
Double
Half
One fourth
Three times
|
12 |
The net charge on a capacitor magnitude of charge of charge |
Infinity
2 q
Q/2
Zero
|
13 |
Which material should be inserted between the plates of a capacitor in order to increase its capacitance. |
Copper
Mica
Iron
Tin
|
14 |
Coulomb /volt is called. |
Farad
Ampere
Joule
Henry
|
15 |
A capacitor is perfect in insulator for. |
Alternating current
Sparking current
Eddy current
Direct current
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16 |
Charge carriers in electrolytes are. |
Protons
Electrons
Holes
Positive and Negative ions
|
17 |
A capacitor stores energy in the form of. |
Magnetic field
Heat energy
Electrical energy
Mechanical energy
|