Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

NEET Class neet Answered

please answer this
question image
Asked by Prashant DIGHE | 08 Mar, 2020, 21:40: PM
answered-by-expert Expert Answer
 
Capacitance of parallel plate capacitor without any dielectric material, 
 
[ εo A ] /d  = [ εo π r2 ] / d  = C  ...................(1)
 
where εo is permittivity of free space, A is area of parallel plates, r is radius of plate and d is separation between plates
 
when space between parallel plate capacitor is partially filled with dielectric of radius r/2,
capacitor is divided into two parts, one with dielectric and remaining one without dielectric.
 
Both capacitors are connected in parallel.
 
Hence capacitance after the space is partially filled with dielectric is given by
 
{ [ εr εo π ( r2 / 4 ) ] / d }  + { [ εo π ( r2 -( r2 / 4 ) ) ] / d } = Cnew   .................(2)
 
where εr is dielectric constant that equals 6
 
Hence, eqn.(2) becomes,  (3/2) { [ εo π r2 ] / d } + (3/4) { [ εo π r2 ] / d } = (9/4) { [ εo π r2 ] / d }  = Cnew
 
Using eqn.(1), we get, Cnew = (9/4) C
 
Answered by Thiyagarajan K | 09 Mar, 2020, 00:36: AM

Application Videos

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
NEET neet - Physics
3 masses of 16 kg and 8 kg and 4 kg are placed in contact as shown in the figure if a force of 140 newton is applied on 4 KG mass, then the force on 16kg will be
Asked by jhansikethburugu2008 | 04 Oct, 2024, 22:09: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
NEET neet - Physics
RMS velocity for certain di atomic at 27°c is 1930 find the gas
Asked by arfasamreen7766 | 13 Sep, 2024, 16:03: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
NEET neet - Physics
at thin wire has length of 21.7cm and radius 0.46mm calculate the volume of the wire to connect significant figures
Asked by mehekfz8738 | 02 Sep, 2024, 19:56: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
NEET neet - Physics
explain nature of magnetic field lines
Asked by muhammadifatimanoori | 22 Aug, 2024, 09:10: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
NEET neet - Physics
a parallel plate capacitor is charged up to a potential V distance between the plates is d. electric field intensity between the plates is E. if the distance between plates is doubled then the electric field will be
Asked by kumawatranya0812 | 16 Aug, 2024, 16:25: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
NEET neet - Physics
hailstones fall from a certain height if only 1% of the hailstones melt on reaching the ground find the height from which they fall
Asked by nzf1042692 | 10 Aug, 2024, 21:07: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
NEET neet - Physics
The position function of a particle moving along the x axis is x(t t 2 3t 2) time t=0 to t =3 find distance travelled
Asked by dropper744 | 08 Aug, 2024, 10:44: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
NEET neet - Physics
Ek pahiya 120 Chakkar Prati minut se ghoom raha hai to ghumte pahiye ki koniya Sal Hogi
Asked by sajnadevirrc | 06 Aug, 2024, 11:55: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
NEET neet - Physics
dimensional formula of heat energy
Asked by nainamalviya833 | 04 Aug, 2024, 20:42: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
NEET neet - Physics
when a body is moving with uniform speed in circular motion then it's angular momentum will be
Asked by juleerajput036 | 30 Jul, 2024, 19:59: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt