Two parallel plate capacitors of capacitance c and 2c

Asked by admin @ in Physics viewed by 366 People

two parallel plate capacitors of capacitance c and 2c are connected in parallel and charged to a potential difference v . if the battery is disconnected and the space between the plates of the capacitor of capacitance c is completely filled with a material of dielectric const. k then pot. diff. across the capacitor will be come (A) 3v(k+2) (B) (K+2)/ 3v (C) 3v/(k+2) (D) 3(k+2)/ v

Answered by admin @


The potential difference across the capacitor will become

V'= 3*V/(K+2)

Option (C) is correct.

Explanation:

Since the total charge that have appeared before and after removing the battery is same.

Original charge= (2 x C + C) x V as the capacitors are connected in parallel.

After removing the battery:

New capacitance = (K x C + 2 x C) x V'.

Where V' is the final potential difference.

After equating we get:

V'= 3*V/(K+2)  

Thus the potential difference across the capacitor will become

V'= 3*V/(K+2)  

Also learn more

A current of 0.5 A is drawn by a filament of an electric bulb for 10 min. find the amount of electric charge that flows through the current?

brainly.in/question/78712

 


Similar Questions

A parallel plate air capacitor has a capacitance c

Asked by admin @ in Physics viewed by 340 persons

14. A parallel plate air capacitor has capacitance C. Now half of the space is filled with a dielectricmaterial with dielectric constant K = 5 as shownin figure. …

A parallel plate capacitor c has a charge q

Asked by admin @ in Physics viewed by 316 persons

A parallel plate capacitor Has a charge Q.The actual charges on the plates are (a) Q R (b) Q/2 Q/2 (c) Q -Q (d) (Q)/(2) (-Q)/(2)

Force between two plates parallel plate capacitor

Asked by maham237 @ in Physics viewed by 303 persons

A parallel-plate capacitor is constructed of two horizontal 15.6-cm-diameter circular plates. A 1.1 g plastic bead with a charge of -6.4 nC is suspended between the two plates by the …

A parallel plate capacitor consists of two circular plates

Asked by admin @ in Physics viewed by 321 persons

A parallel plate capacitor consists of two circular plates each of radius 2 cm, separated by a distance of 0.1 mm. If voltage across the plates is varying at the …

Derive expression for capacitance of a parallel plate capacitor

Asked by admin @ in Physics viewed by 353 persons

What is a parallel plate capacitor. Derive an expression for its capacitance?

A parallel-plate capacitor is charged by a 20.0 v battery, then the battery is removed.

Asked by maham237 @ in Physics viewed by 433 persons

A parallel-plate capacitor is charged by a 9.00 V battery, then the battery is removed. Part A What is the potential difference between the plates after the battery is disconnected? …

A capacitor of capacitance c

Asked by admin @ in Physics viewed by 283 persons

`A capacitor of capacitance C is charged with V volt battery as shown in figure. When the switch S is turned to position (2) the energy stored on the capacitor …

Five capacitors each of capacitance value c are connected

Asked by admin @ in Science viewed by 320 persons

Five capacitors, each of capacitance value C are connected as shown in the figure. The ratio of capacitance between P and R,

A parallel plate capacitor with air between the plates

Asked by admin @ in Physics viewed by 298 persons

Question 2.5: A parallel plate capacitor with air between the plates has a capacitance of 8 pF (1pF = 10 −12 F). What will be the capacitance if the distance …

How to find the area of a parallel plate capacitor

Asked by admin @ in Physics viewed by 274 persons

A parallel-plate capacitor has plates of area A. The plates are initially separated by a distance d, but this distance can be varied. The capacitor is connected to a battery. …

The capacity of a parallel plate capacitor depends on

Asked by admin @ in Physics viewed by 316 persons

On what factors does the capacitance of a parallel plate capacitor depend

A parallel plate capacitor is charged by a battery

Asked by admin @ in Physics viewed by 305 persons

A parallel plate capacitor is charged by a battery. After some time the battery is disconnected and a dielectric slab with its thickness equal to the plate separation is inserted …

Two parallel plates are separated by a distance of 5mm

Asked by admin @ in Physics viewed by 334 persons

two parallel plates separated by the distance of 5 mm are kept in the potential difference of 50 volt a particle of mass 10 ^ - 15 kg and charge …

A parallel plate capacitor is charged and then isolated

Asked by admin @ in Physics viewed by 380 persons

A parallel plate capacitor is charged and then isolated. What is the effect of increasing the plate separation on charge, potential, capacitance, respectively? (a) constant, decreases, decreases (b) increases, decreases, …

A capacitor is formed by two square metal plates

Asked by admin @ in Physics viewed by 314 persons

A capacitor is formed by two square metal-plates of edge a, separated by a distance d. Dielectrics of dielectric constant K1 and K2 are filled in the gap as shown …

Most viewed questions in Physics

Jeevandeep health and physical education std 10 answers pdf

Asked by admin @ in Physics viewed by 11070 persons

Hc verma physics class 9 solutions of describing motion

Asked by admin @ in Physics viewed by 2668 persons

How to leave nightmare land answer key

Asked by maham237 @ in Physics viewed by 1597 persons

Base area and stability of some objects with different shapes

Asked by admin @ in Physics viewed by 1532 persons

Which of the following statements about safe lifting are correct

Asked by admin @ in Physics viewed by 1514 persons

Porous water-absorbing mass of fibers

Asked by wiki @ in Physics viewed by 1496 persons

Absorption of water by filter paper is due to

Asked by admin @ in Physics viewed by 1438 persons

A composite wire of uniform diameter 3mm

Asked by admin @ in Physics viewed by 1404 persons

At a distance l 400m from the traffic light

Asked by admin @ in Physics viewed by 1332 persons

A rocket of mass m is launched straight up with thrust f⃗ thrust.

Asked by maham237 @ in Physics viewed by 1315 persons

A hair dryer with a resistance of 9.6 ohms operates at 120 volts for 2.5 minutes. the total electrical energy used by the dryer during this time interval is

Asked by maham237 @ in Physics viewed by 1204 persons

Mind map for light reflection and refraction class 10

Asked by admin @ in Physics viewed by 1147 persons

The african cicada is the world's loudest insect, producing a sound intensity level of 107 db at a distance of 0.50 m. what is the intensity of its sound (in w/m2) as heard by someone standing 3.1 m away? express your answer in watts per meter squared.

Asked by maham237 @ in Physics viewed by 1099 persons

A thief runs at a speed of 10m s

Asked by admin @ in Physics viewed by 1096 persons

A 5.8 x 10 4 watt elevator motor can lift

Asked by maham237 @ in Physics viewed by 1080 persons