Q.

A parallel plate capacitor was made with two rectangular plates, each with a length of l  = 3 cm and breath of b = 1 cm. The distance between the plates is 3 μm. Out of the following, which are the ways to increase the capacitance by a factor of 10 ?
A. l = 30 cm, b = 1 cm, d = 1 μm
B.l  = 3 cm, b = 1 cm, d = 30 μm
C. l  = 6 cm, b = 5 cm, d = 3 μm
D.l  = 1 cm, b = 1 cm, d = 10 μm
E. l = 5 cm, b = 2 cm, d = 1 μm
Choose the correct answer from the options given below :

see full answer

Start JEE / NEET / Foundation preparation at rupees 99/day !!

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!
An Intiative by Sri Chaitanya

a

C and E only

b

A only

c

B and D only

d

C only

answer is A.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

C=A0d
A : plate area
d : distance between the plates.
Capacitance initial
=ϵ0bd=ϵ0units
Option 'C'   =6cm b=5cm d=3cm
Capacitance =10ϵ0units
Option 'E' =5cm
 b=2cm d=1cm
Capacitance=10ϵ0units
Ans is option (1)

Watch 3-min video & get full concept clarity

tricks from toppers of Infinity Learn

score_test_img

Get Expert Academic Guidance – Connect with a Counselor Today!

whats app icon