KCET2016PhysicsElectrostatics
If ( E _ a x ) and ( E _ e q ) represents electric field at a point on the axial and equatorial line of a dipole. If points are at a distance ( r ) from the centre of the dipole, for ( r>> ) a
Options
- A( E _ a x = E _ e q )
- B( E _ a x =- E _ e q )
- C( E _ a x =-2 E )
- D( E _ eq =2 E _ ax )
Correct answer
C. ( E _ a x =-2 E )
Step-by-step solution
Both the fields are opposite. For ( r>>a, E _ e q = 1 4 ₀ p (r³ ) ) And ( E _ a x = 1 4 ₀ 2 p r³ ) ( -2 E _ e q = E _ a x ) ( E_ eq )