Question

Two point charges q and -3q placed at distance apart if the electric field at the location of q is e than the locality of -3q it is

Answer 1

Let the distance between two point charges q and - 3q is r.
now electric field due to -3q at the location of q
is given by , E = k(-3q)/r² = (-3)kq/r² .....(1)

again, electric field due to q at the location of -3q is given by , E' = kq/r² ......(2)


from equations (1) and (2), it is clear that
E = -3E'
so, E' = -E/3 ,

hence, electric field due to q at the location of -3q is -E/3

Answer 2

Answer:

Explanation:

Let the distance between two point charges q and - 3q is r.

now electric field due to -3q at the location of q

is given by , E = k(-3q)/r² = (-3)kq/r² .....(1)

again, electric field due to q at the location of -3q is given by , E' = kq/r² ......(2)

from equations (1) and (2), it is clear that

E = -3E'

so, E' = -E/3 ,

hence, electric field due to q at the location of -3q is -E/3