MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Two Parallel Currents

The ratio of ...

Question

The ratio of forces between two charges placed at a certain distance apart in air and at half the distance apart in medium of dielectric k is

A)1:4k

B)k:4

C)4k:1

D)4:k

Open in App

Solution

Fa=q1q24πε0r2,Fb=q1q2K4πε0 (r/2)2,⇒Fa:Fb=4;k

F=1/(kr^2)
=4:k

Suggest Corrections

thumbs-up

3

Similar questions

Q. Two point charges

q

q_{1}

are placed at distance

r

apart. A dielectric sheet of dielectric constant

k

t

is placed in between. Find the force between the two charges :

Q. The force between two charges placed in air at a distance r apart is F. Then the force between the same two charges if a dielectric having k = 4 and thickness r/2 is introduced between charges is:

Q. Two point charges exert on each other a force

F

when they are placed

r

distant apart in air. When they are placed

R

distance apart in a medium of dielectric constant K, they were exerting the same force. The distance

R

Q. Two point charges placed at a distance

^{'} r^{'}

in air exert a force

^{'} F^{'}

. The distance at which they exert same force when placed in a certain medium (dielectric constant

K

Q. Two point charges placed at a distance

r

in the air experiences a certain force, then the distance at which they will experience the same force in the medium of dielectric constant

K

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Parallel Currents

PHYSICS

Watch in App

explore_more_icon

Explore more

Two Parallel Currents

Standard XII Physics

Join BYJU'S Learning Program

CrossIcon