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Two point charges of magnitude 4 muC and...

Two point charges of magnitude 4 `mu`C and-4`mu`C are kept at points (-2 cm, 0) and (2 cm, 0) respectively. Calculate the magnitude of electric field intensity at points (0, 2 cm).

A

`5.0 xx10^(-4) V//m`

B

`2.5 xx10^(-4) V//m`

C

It will depend on the orientation of the dipole

D

`1.25 xx10^(-4) V//m`

Text Solution

Verified by Experts

The correct Answer is:
D
For dipole –
`E prop 1/r^3, E_1/E_2 = r_2^3/r_1^3implies (1xx10^(-3))/(E_2) = ((20sqrt2)^3)/((10sqrt2)^3)`
`implies E_2=(1xx10^(-3))/8 =1.25 xx10^(-4)V//m`
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