Question 1 :
Four capacitors of equal capacitance have an equivalent capacitance $${ C }_{ 1 }$$ when connected in series and an equivalent capacitance $${ C }_{ 2 }$$ when connected in parallel. The ratio $$\dfrac { { C }_{ 1 } }{ { C }_{ 2 } } $$ is
Question 2 :
For capacitors in the series combination, the total capacitance C is given by<br/><br/>
Question 3 :
Find the total capacitance for three capacitors of $$10$$f,$$15$$f and $$35$$f in parallel with each other?
Question 4 :
Two capacitors of capacity $$C_1$$ and $$C_2$$ are connected in parallel, then the equivalent capacity is:
Question 5 : <span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small"><p class="wysiwyg-text-align-left">In a charged capacitor the energy is stored in<b>:</b></p><b><span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small"></b>
Question 6 :
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 7 :
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 8 :
If the charge on the condenser of $$10\mu F$$ is doubled, then the energy stored in it becomes ____________.
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 :
The capacity of a condenser is 20$$\mu F$$ $$\displaystyle $$ and the potential is 20 V. The energy released an discharging it fully will be
Question 11 :
A $$2 \mu F$$ capacitor is charged to $$100 V$$ and then its plates are connected by a conducting wire, the heat produced is :
Question 12 :
The energy stored in a capacitor of capacitance C having a charge Q under a potential $$V$$ is
Question 13 :
The amount of work done is increasing the voltage across the plates of a capacitor from $$5V$$ to $$10V$$ is $$W$$. The work done in increasing it from $$10V$$ to $$15V$$ will be :
Question 14 :
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 15 :
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 16 :
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 17 :
The energy stored in a capacitor of capacitance $$C$$ having a charge $$Q$$ under a potential $$V$$ is
Question 18 :
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 19 :
$$R=100\ k\Omega$$ 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 20 :
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 21 :
A 16 pF capacitor is connected to 70 V supply. The amount of electric energy stored in the capacitor is:
Question 22 :
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 23 :
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 24 : <span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small"><p class="wysiwyg-text-align-left">The energy stored in a sphere of $$10$$ cm radius when the sphere is charged to a potential difference of $$300$$ V is</p>
Question 25 :
A cube of side '$$a$$' has a charge $$q$$ placed at each of its eight corneres. The potential at the centre of the cube due to all the charges is :<br/>
Question 26 :
A capacitor of capacitance 10$$\mu$$F is charged by connecting through a resistance of 20 ohm and a battery of 20 V. What is the energy supplied by the battery?
Question 27 :
A dielectric slab of thickness $$6 cm$$ is placed between the plates of a parallel plate capacitor. If the distance between plates is reduced by $$4 cm$$, the capacity of the capacitor remains the same. Find the dielectric constant of the medium.<br/>
