Question

if E1 andE2 are electric field at axial point and equatorial point of an electric dipole, then what is the dot product of E1 andE2

Answer 1

I think it's 0 as cos theta is 90degrees

Answer 2

The dot product E1 and E2 that are electric field at axial point and equatorial point of an electric dipole is 0 (zero).

• The angle between the direction of the  electric field at axial point and equatorial point is 90°.

• A.B = A*B*Cosθ

• Cosθ  = 0 when θ = 90°

• Thus, dot product of E1 an E2 will be 0 (zero).