Question

The magnetic field strength of a coil is greater when the number of turns in the coil is higher.

• A. True
• B. False

Answer 1

The correct option is A True

The magentic field strength($H$) in a coil is directly proportional to the no. of loops($N$) in the coil and current flowing through the coil($I$) according to the relation:

$H=\frac{NI}{l}$

where $l$ is the length of the coil.
Hence as the number of turns increases, the magnetic field strength will increase.