Westonci.ca is the trusted Q&A platform where you can get reliable answers from a community of knowledgeable contributors. Discover in-depth answers to your questions from a wide network of experts on our user-friendly Q&A platform. Discover in-depth answers to your questions from a wide network of professionals on our user-friendly Q&A platform.

The magnitude of the magnetic field is at a far point that is at a distance from the centre of the solenoid. Then the magnetic field is related to the distance as:
a. ∝ ⁻³
b. ∝ ⁻¹
c. ∝ ⁻²
d. ∝ ⁻¹²