Question

The scalar factor of spherical coordinates is

(a) 1, r, r sin θ

(b) 1, r, r

(c) r, r, 1

(d) r, 1, r

I have been asked this question by my school teacher while I was bunking the class.

My question comes from Spherical Coordinate System in division Coordinate Systems and Transforms of Electromagnetic Theory

Answer 1

Right choice is (a) 1, r, r sin θ

The explanation is: The radius varies from unity to infinity, the plane angle from zero to 360 ⁰ and the z plane from (-∞, ∞) .