Question 1 :
$$R=100\ k\Omega$$ and $$C=1\ \mu F$$ are connected in a series with a $$12\ volt$$ battery. What is the maximum energy stored in the capacitor:

Question 2 :
A metallic sphere of radius $$18cm$$ has been given a charge of $$5\times { 10 }^{ -6 }C$$. The energy of the charged conductor is :

Question 3 :
The capacity of a condenser is $$4 \times 10^{-6}$$ farad and its potential is 100 volts. The energy released on discharging it fully will be

Question 4 :
The energy stored in a capacitor of capacitance $$C$$ having a charge $$Q$$ under a potential $$V$$ is

Question 5 :
The potential energy of system of two equal negative point charges of $$2\mu C$$ each held 1 m apart in air is ($$k = 9 \times 10^9\, SI \,unit$$)

Question 6 :
The capacitance of a variable capacitor joined with the battery of $$100$$V is changed from $$2\mu F$$ to $$10\mu F$$. What is the change in the energy stored in it?

Question 7 :
A parallel plate capacitor of $$1\mu F$$ capacity is discharging through a resister. If its energy reduces to half in one second. The value of resistance will be?

Question 8 :
If a capacitor having capacitance of $$1200\mu F$$ is charged at a uniform rate of $$100\mu C/s$$, what is the time required to increase its potential by $$20$$ volts?

Question 9 :
A capacitor having capacity of $$2.0\mu F$$ is charged to $$200\ V$$ and then the plates of the capacitors are connected to a resistance wire. The heat produced in joule will be :

Question 10 :
A 16 pF capacitor is connected to 70 V supply. The amount of electric energy stored in the capacitor is:

Question 11 :
If the charge on the condenser of $$10\mu F$$ is doubled, then the energy stored in it becomes ____________.

Question 12 :
The energy stored in a capacitor of capacitance C having a charge Q under a potential $$V$$ is

Question 13 :
Two parallel-plate of capacitor have charges +Q and -Q and potential difference $$\triangle V$$ due to charging, Now the capacitor is disconnected then the potential difference and the stored electrical potential energy is:

Question 14 :
A capacitor of capacity C$$_{1}$$ charged up to V volt and then connected to an uncharged capacitor C$$_{2}$$.Then final P.D. across each will be:

Question 15 :
A potential difference of $$\Delta V$$exists between two plates of a parallel-plate capacitor with capacitance C . A dielectric with a dielectric constant of kis then placed between the plates of the capacitor. What is the energy stored in the capacitor?

Question 16 :
An automobile spring extends 0.2 m for 5000N load. The ratio of potential energy stored in this spring when it has been compressed by 0.2 m to the potential energy stored in the $$10\mu{F}$$ capacitor at a potential difference of 10000V will be:

Question 17 :
Three identical capacitors, each of capacitance $$C$$, are connected in series with a battery of emf $$V$$ and get fully charged. Now, the battery is removed and the capacitors are connected in parallel with positive terminals are one point and negative terminals at other point. Then, the common potential will be :<br/>

Question 18 :
When two capacitors are connected in parallel the resulting combination has capacitance $$10uF$$.&#160;&#160;The same capacitors when connected in series results in a&#160;capacitance $$0.5uF$$. The respective values of individual capacitors are

Question 20 :
A parallel plate condenser with oil between the plates (dielectric constant of oil $$K =2$$) has a capacitance C. If the oil is removed, then capacitance of the capacitor becomes :<br/>