Question

The electric field, at a distance of 20 cm from the center of a dielectric sphere of radius 10 cm is 100 N/C. Then Electric field intensity at 3 cm distance from the center of sphere is ?

Answer 1

@vishweshshrimali5 @Vincent-Lyon.Fr

Answer 2

@Abmon98

Answer 3

Okay lets see how much I remember ;)

Answer 4

;)

Answer 5

You would be knowing the formula for electric field due to a charged sphere ?

Answer 6

yes

Answer 7

I am using gauss law

Answer 8

Great. You can use Gauss' law to find out the formula for electric field

Answer 9

\[\large{E = k\cfrac{Q}{r^2}}\]

Answer 10

I am not using the vectorial form

Answer 11

that's ok

Answer 12

i am sorry i have no idea @Abhisar

Answer 13

It's ok @Abmon98 !
Thanx for responding :)

Answer 14

I used that formula because distance of separation > radius of sphere

Answer 15

Here:

r = 20 cm = 0.2 m
E = 100 N/C

Using this we can find out the value k

Answer 16

* the value of kQ

Answer 17

I got it :D

Answer 18

Now for the next part since distance of separation < radius of sphere

Thus the formula would be:

\[\large{E = \cfrac{kQr}{R^3}}\]

Answer 19

what is the answer you getting btw ?

Answer 20

Will have to calculate it ... Just a minute :)

Answer 21

yeah sure !

Answer 22

120 N/C ?

Answer 23

lol..i am getting 1200 N/c....must be a mistake in conversion

Answer 24

yes it's 120 N/C .. ..... Thanx @vishweshshrimali5 !

Answer 25

yw :)

Answer 26

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Answer 27

Great !